20481240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{691}}^1$

素因数の和:737

約数の個数: 128

約数和(自身を含む): 69753600

約数和(自身を除く): 49272360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 19, 20, 24, 26, 30, 38, 39, 40, 52, 57, 60, 65, 76, 78, 95, 104, 114, 120, 130, 152, 156, 190, 195, 228, 247, 260, 285, 312, 380, 390, 456, 494, 520, 570, 691, 741, 760, 780, 988, 1140, 1235, 1382, 1482, 1560, 1976, 2073, 2280, 2470, 2764, 2964, 3455, 3705, 4146, 4940, 5528, 5928, 6910, 7410, 8292, 8983, 9880, 10365, 13129, 13820, 14820, 16584, 17966, 20730, 26258, 26949, 27640, 29640, 35932, 39387, 41460, 44915, 52516, 53898, 65645, 71864, 78774, 82920, 89830, 105032, 107796, 131290, 134745, 157548, 170677, 179660, 196935, 215592, 262580, 269490, 315096, 341354, 359320, 393870, 512031, 525160, 538980, 682708, 787740, 853385, 1024062, 1077960, 1365416, 1575480, 1706770, 2048124, 2560155, 3413540, 4096248, 5120310, 6827080, 10240620, 20481240]

約数ペア:

[(1, 20481240), (2, 10240620), (3, 6827080), (4, 5120310), (5, 4096248), (6, 3413540), (8, 2560155), (10, 2048124), (12, 1706770), (13, 1575480), (15, 1365416), (19, 1077960), (20, 1024062), (24, 853385), (26, 787740), (30, 682708), (38, 538980), (39, 525160), (40, 512031), (52, 393870), (57, 359320), (60, 341354), (65, 315096), (76, 269490), (78, 262580), (95, 215592), (104, 196935), (114, 179660), (120, 170677), (130, 157548), (152, 134745), (156, 131290), (190, 107796), (195, 105032), (228, 89830), (247, 82920), (260, 78774), (285, 71864), (312, 65645), (380, 53898), (390, 52516), (456, 44915), (494, 41460), (520, 39387), (570, 35932), (691, 29640), (741, 27640), (760, 26949), (780, 26258), (988, 20730), (1140, 17966), (1235, 16584), (1382, 14820), (1482, 13820), (1560, 13129), (1976, 10365), (2073, 9880), (2280, 8983), (2470, 8292), (2764, 7410), (2964, 6910), (3455, 5928), (3705, 5528), (4146, 4940)]