19778850

素因数分解:

$2^1\times 3^3\times 5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1$

素因数の和:71

約数の個数: 288

約数和(自身を含む): 71245440

約数和(自身を除く): 51466590

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 13, 14, 15, 18, 21, 23, 25, 26, 27, 30, 35, 39, 42, 45, 46, 49, 50, 54, 63, 65, 69, 70, 75, 78, 90, 91, 98, 105, 115, 117, 126, 130, 135, 138, 147, 150, 161, 175, 182, 189, 195, 207, 210, 225, 230, 234, 245, 270, 273, 294, 299, 315, 322, 325, 345, 350, 351, 378, 390, 414, 441, 450, 455, 483, 490, 525, 546, 575, 585, 598, 621, 630, 637, 650, 675, 690, 702, 735, 805, 819, 882, 897, 910, 945, 966, 975, 1035, 1050, 1127, 1150, 1170, 1225, 1242, 1274, 1323, 1350, 1365, 1449, 1470, 1495, 1575, 1610, 1638, 1725, 1755, 1794, 1890, 1911, 1950, 2070, 2093, 2205, 2254, 2275, 2415, 2450, 2457, 2646, 2691, 2730, 2898, 2925, 2990, 3105, 3150, 3185, 3381, 3450, 3510, 3675, 3822, 4025, 4095, 4186, 4347, 4410, 4485, 4550, 4725, 4830, 4914, 5175, 5382, 5635, 5733, 5850, 6210, 6279, 6370, 6615, 6762, 6825, 7245, 7350, 7475, 8050, 8073, 8190, 8694, 8775, 8970, 9450, 9555, 10143, 10350, 10465, 11025, 11270, 11466, 12075, 12285, 12558, 13230, 13455, 13650, 14490, 14651, 14950, 15525, 15925, 16146, 16905, 17199, 17550, 18837, 19110, 20286, 20475, 20930, 21735, 22050, 22425, 24150, 24570, 26910, 28175, 28665, 29302, 30429, 31050, 31395, 31850, 33075, 33810, 34398, 36225, 37674, 40365, 40950, 43470, 43953, 44850, 47775, 50715, 52325, 56350, 56511, 57330, 60858, 61425, 62790, 66150, 67275, 72450, 73255, 80730, 84525, 85995, 87906, 94185, 95550, 101430, 104650, 108675, 113022, 122850, 131859, 134550, 143325, 146510, 152145, 156975, 169050, 171990, 188370, 201825, 217350, 219765, 253575, 263718, 282555, 286650, 304290, 313950, 366275, 395577, 403650, 429975, 439530, 470925, 507150, 565110, 659295, 732550, 760725, 791154, 859950, 941850, 1098825, 1318590, 1412775, 1521450, 1977885, 2197650, 2825550, 3296475, 3955770, 6592950, 9889425, 19778850]

約数ペア:

[(1, 19778850), (2, 9889425), (3, 6592950), (5, 3955770), (6, 3296475), (7, 2825550), (9, 2197650), (10, 1977885), (13, 1521450), (14, 1412775), (15, 1318590), (18, 1098825), (21, 941850), (23, 859950), (25, 791154), (26, 760725), (27, 732550), (30, 659295), (35, 565110), (39, 507150), (42, 470925), (45, 439530), (46, 429975), (49, 403650), (50, 395577), (54, 366275), (63, 313950), (65, 304290), (69, 286650), (70, 282555), (75, 263718), (78, 253575), (90, 219765), (91, 217350), (98, 201825), (105, 188370), (115, 171990), (117, 169050), (126, 156975), (130, 152145), (135, 146510), (138, 143325), (147, 134550), (150, 131859), (161, 122850), (175, 113022), (182, 108675), (189, 104650), (195, 101430), (207, 95550), (210, 94185), (225, 87906), (230, 85995), (234, 84525), (245, 80730), (270, 73255), (273, 72450), (294, 67275), (299, 66150), (315, 62790), (322, 61425), (325, 60858), (345, 57330), (350, 56511), (351, 56350), (378, 52325), (390, 50715), (414, 47775), (441, 44850), (450, 43953), (455, 43470), (483, 40950), (490, 40365), (525, 37674), (546, 36225), (575, 34398), (585, 33810), (598, 33075), (621, 31850), (630, 31395), (637, 31050), (650, 30429), (675, 29302), (690, 28665), (702, 28175), (735, 26910), (805, 24570), (819, 24150), (882, 22425), (897, 22050), (910, 21735), (945, 20930), (966, 20475), (975, 20286), (1035, 19110), (1050, 18837), (1127, 17550), (1150, 17199), (1170, 16905), (1225, 16146), (1242, 15925), (1274, 15525), (1323, 14950), (1350, 14651), (1365, 14490), (1449, 13650), (1470, 13455), (1495, 13230), (1575, 12558), (1610, 12285), (1638, 12075), (1725, 11466), (1755, 11270), (1794, 11025), (1890, 10465), (1911, 10350), (1950, 10143), (2070, 9555), (2093, 9450), (2205, 8970), (2254, 8775), (2275, 8694), (2415, 8190), (2450, 8073), (2457, 8050), (2646, 7475), (2691, 7350), (2730, 7245), (2898, 6825), (2925, 6762), (2990, 6615), (3105, 6370), (3150, 6279), (3185, 6210), (3381, 5850), (3450, 5733), (3510, 5635), (3675, 5382), (3822, 5175), (4025, 4914), (4095, 4830), (4186, 4725), (4347, 4550), (4410, 4485)]