20314980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{701}}^1$

素因数の和:746

約数の個数: 144

約数和(自身を含む): 73592064

約数和(自身を除く): 53277084

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 23, 28, 30, 35, 36, 42, 45, 46, 60, 63, 69, 70, 84, 90, 92, 105, 115, 126, 138, 140, 161, 180, 207, 210, 230, 252, 276, 315, 322, 345, 414, 420, 460, 483, 630, 644, 690, 701, 805, 828, 966, 1035, 1260, 1380, 1402, 1449, 1610, 1932, 2070, 2103, 2415, 2804, 2898, 3220, 3505, 4140, 4206, 4830, 4907, 5796, 6309, 7010, 7245, 8412, 9660, 9814, 10515, 12618, 14020, 14490, 14721, 16123, 19628, 21030, 24535, 25236, 28980, 29442, 31545, 32246, 42060, 44163, 48369, 49070, 58884, 63090, 64492, 73605, 80615, 88326, 96738, 98140, 112861, 126180, 145107, 147210, 161230, 176652, 193476, 220815, 225722, 241845, 290214, 294420, 322460, 338583, 441630, 451444, 483690, 564305, 580428, 677166, 725535, 883260, 967380, 1015749, 1128610, 1354332, 1451070, 1692915, 2031498, 2257220, 2902140, 3385830, 4062996, 5078745, 6771660, 10157490, 20314980]

約数ペア:

[(1, 20314980), (2, 10157490), (3, 6771660), (4, 5078745), (5, 4062996), (6, 3385830), (7, 2902140), (9, 2257220), (10, 2031498), (12, 1692915), (14, 1451070), (15, 1354332), (18, 1128610), (20, 1015749), (21, 967380), (23, 883260), (28, 725535), (30, 677166), (35, 580428), (36, 564305), (42, 483690), (45, 451444), (46, 441630), (60, 338583), (63, 322460), (69, 294420), (70, 290214), (84, 241845), (90, 225722), (92, 220815), (105, 193476), (115, 176652), (126, 161230), (138, 147210), (140, 145107), (161, 126180), (180, 112861), (207, 98140), (210, 96738), (230, 88326), (252, 80615), (276, 73605), (315, 64492), (322, 63090), (345, 58884), (414, 49070), (420, 48369), (460, 44163), (483, 42060), (630, 32246), (644, 31545), (690, 29442), (701, 28980), (805, 25236), (828, 24535), (966, 21030), (1035, 19628), (1260, 16123), (1380, 14721), (1402, 14490), (1449, 14020), (1610, 12618), (1932, 10515), (2070, 9814), (2103, 9660), (2415, 8412), (2804, 7245), (2898, 7010), (3220, 6309), (3505, 5796), (4140, 4907), (4206, 4830)]