21154770

素因数分解:

$2^1\times 3^4\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1$

素因数の和:87

約数の個数: 240

約数和(自身を含む): 72997848

約数和(自身を除く): 51843078

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 13, 14, 15, 18, 21, 26, 27, 30, 35, 39, 41, 42, 45, 49, 54, 63, 65, 70, 78, 81, 82, 90, 91, 98, 105, 117, 123, 126, 130, 135, 147, 162, 182, 189, 195, 205, 210, 234, 245, 246, 270, 273, 287, 294, 315, 351, 369, 378, 390, 405, 410, 441, 455, 490, 533, 546, 567, 574, 585, 615, 630, 637, 702, 735, 738, 810, 819, 861, 882, 910, 945, 1053, 1066, 1107, 1134, 1170, 1230, 1274, 1323, 1365, 1435, 1470, 1599, 1638, 1722, 1755, 1845, 1890, 1911, 2009, 2106, 2205, 2214, 2457, 2583, 2646, 2665, 2730, 2835, 2870, 3185, 3198, 3321, 3510, 3690, 3731, 3822, 3969, 4018, 4095, 4305, 4410, 4797, 4914, 5166, 5265, 5330, 5535, 5670, 5733, 6027, 6370, 6615, 6642, 7371, 7462, 7749, 7938, 7995, 8190, 8610, 9555, 9594, 10045, 10530, 11070, 11193, 11466, 12054, 12285, 12915, 13230, 14391, 14742, 15498, 15990, 16605, 17199, 18081, 18655, 19110, 19845, 20090, 22386, 23247, 23985, 24570, 25830, 26117, 28665, 28782, 30135, 33210, 33579, 34398, 36162, 36855, 37310, 38745, 39690, 43173, 46494, 47970, 51597, 52234, 54243, 55965, 57330, 60270, 67158, 71955, 73710, 77490, 78351, 85995, 86346, 90405, 100737, 103194, 108486, 111930, 116235, 130585, 143910, 156702, 162729, 167895, 171990, 180810, 201474, 215865, 232470, 235053, 257985, 261170, 271215, 302211, 325458, 335790, 391755, 431730, 470106, 503685, 515970, 542430, 604422, 705159, 783510, 813645, 1007370, 1175265, 1410318, 1511055, 1627290, 2115477, 2350530, 3022110, 3525795, 4230954, 7051590, 10577385, 21154770]

約数ペア:

[(1, 21154770), (2, 10577385), (3, 7051590), (5, 4230954), (6, 3525795), (7, 3022110), (9, 2350530), (10, 2115477), (13, 1627290), (14, 1511055), (15, 1410318), (18, 1175265), (21, 1007370), (26, 813645), (27, 783510), (30, 705159), (35, 604422), (39, 542430), (41, 515970), (42, 503685), (45, 470106), (49, 431730), (54, 391755), (63, 335790), (65, 325458), (70, 302211), (78, 271215), (81, 261170), (82, 257985), (90, 235053), (91, 232470), (98, 215865), (105, 201474), (117, 180810), (123, 171990), (126, 167895), (130, 162729), (135, 156702), (147, 143910), (162, 130585), (182, 116235), (189, 111930), (195, 108486), (205, 103194), (210, 100737), (234, 90405), (245, 86346), (246, 85995), (270, 78351), (273, 77490), (287, 73710), (294, 71955), (315, 67158), (351, 60270), (369, 57330), (378, 55965), (390, 54243), (405, 52234), (410, 51597), (441, 47970), (455, 46494), (490, 43173), (533, 39690), (546, 38745), (567, 37310), (574, 36855), (585, 36162), (615, 34398), (630, 33579), (637, 33210), (702, 30135), (735, 28782), (738, 28665), (810, 26117), (819, 25830), (861, 24570), (882, 23985), (910, 23247), (945, 22386), (1053, 20090), (1066, 19845), (1107, 19110), (1134, 18655), (1170, 18081), (1230, 17199), (1274, 16605), (1323, 15990), (1365, 15498), (1435, 14742), (1470, 14391), (1599, 13230), (1638, 12915), (1722, 12285), (1755, 12054), (1845, 11466), (1890, 11193), (1911, 11070), (2009, 10530), (2106, 10045), (2205, 9594), (2214, 9555), (2457, 8610), (2583, 8190), (2646, 7995), (2665, 7938), (2730, 7749), (2835, 7462), (2870, 7371), (3185, 6642), (3198, 6615), (3321, 6370), (3510, 6027), (3690, 5733), (3731, 5670), (3822, 5535), (3969, 5330), (4018, 5265), (4095, 5166), (4305, 4914), (4410, 4797)]