19919520

素因数分解:

$2^5\times 3^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1$

素因数の和:109

約数の個数: 240

約数和(自身を含む): 74095560

約数和(自身を除く): 54176040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 29, 30, 32, 36, 40, 45, 48, 53, 54, 58, 60, 72, 80, 81, 87, 90, 96, 106, 108, 116, 120, 135, 144, 145, 159, 160, 162, 174, 180, 212, 216, 232, 240, 261, 265, 270, 288, 290, 318, 324, 348, 360, 405, 424, 432, 435, 464, 477, 480, 522, 530, 540, 580, 636, 648, 696, 720, 783, 795, 810, 848, 864, 870, 928, 954, 1044, 1060, 1080, 1160, 1272, 1296, 1305, 1392, 1431, 1440, 1537, 1566, 1590, 1620, 1696, 1740, 1908, 2088, 2120, 2160, 2320, 2349, 2385, 2544, 2592, 2610, 2784, 2862, 3074, 3132, 3180, 3240, 3480, 3816, 3915, 4176, 4240, 4293, 4320, 4611, 4640, 4698, 4770, 5088, 5220, 5724, 6148, 6264, 6360, 6480, 6960, 7155, 7632, 7685, 7830, 8352, 8480, 8586, 9222, 9396, 9540, 10440, 11448, 11745, 12296, 12528, 12720, 12960, 13833, 13920, 14310, 15264, 15370, 15660, 17172, 18444, 18792, 19080, 20880, 21465, 22896, 23055, 23490, 24592, 25056, 25440, 27666, 28620, 30740, 31320, 34344, 36888, 37584, 38160, 41499, 41760, 42930, 45792, 46110, 46980, 49184, 55332, 57240, 61480, 62640, 68688, 69165, 73776, 75168, 76320, 82998, 85860, 92220, 93960, 110664, 114480, 122960, 124497, 125280, 137376, 138330, 147552, 165996, 171720, 184440, 187920, 207495, 221328, 228960, 245920, 248994, 276660, 331992, 343440, 368880, 375840, 414990, 442656, 497988, 553320, 622485, 663984, 686880, 737760, 829980, 995976, 1106640, 1244970, 1327968, 1659960, 1991952, 2213280, 2489940, 3319920, 3983904, 4979880, 6639840, 9959760, 19919520]

約数ペア:

[(1, 19919520), (2, 9959760), (3, 6639840), (4, 4979880), (5, 3983904), (6, 3319920), (8, 2489940), (9, 2213280), (10, 1991952), (12, 1659960), (15, 1327968), (16, 1244970), (18, 1106640), (20, 995976), (24, 829980), (27, 737760), (29, 686880), (30, 663984), (32, 622485), (36, 553320), (40, 497988), (45, 442656), (48, 414990), (53, 375840), (54, 368880), (58, 343440), (60, 331992), (72, 276660), (80, 248994), (81, 245920), (87, 228960), (90, 221328), (96, 207495), (106, 187920), (108, 184440), (116, 171720), (120, 165996), (135, 147552), (144, 138330), (145, 137376), (159, 125280), (160, 124497), (162, 122960), (174, 114480), (180, 110664), (212, 93960), (216, 92220), (232, 85860), (240, 82998), (261, 76320), (265, 75168), (270, 73776), (288, 69165), (290, 68688), (318, 62640), (324, 61480), (348, 57240), (360, 55332), (405, 49184), (424, 46980), (432, 46110), (435, 45792), (464, 42930), (477, 41760), (480, 41499), (522, 38160), (530, 37584), (540, 36888), (580, 34344), (636, 31320), (648, 30740), (696, 28620), (720, 27666), (783, 25440), (795, 25056), (810, 24592), (848, 23490), (864, 23055), (870, 22896), (928, 21465), (954, 20880), (1044, 19080), (1060, 18792), (1080, 18444), (1160, 17172), (1272, 15660), (1296, 15370), (1305, 15264), (1392, 14310), (1431, 13920), (1440, 13833), (1537, 12960), (1566, 12720), (1590, 12528), (1620, 12296), (1696, 11745), (1740, 11448), (1908, 10440), (2088, 9540), (2120, 9396), (2160, 9222), (2320, 8586), (2349, 8480), (2385, 8352), (2544, 7830), (2592, 7685), (2610, 7632), (2784, 7155), (2862, 6960), (3074, 6480), (3132, 6360), (3180, 6264), (3240, 6148), (3480, 5724), (3816, 5220), (3915, 5088), (4176, 4770), (4240, 4698), (4293, 4640), (4320, 4611)]