18870800

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{191}}^1$

素因数の和:241

約数の個数: 120

約数和(自身を含む): 51663360

約数和(自身を除く): 32792560

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 25, 26, 38, 40, 50, 52, 65, 76, 80, 95, 100, 104, 130, 152, 190, 191, 200, 208, 247, 260, 304, 325, 380, 382, 400, 475, 494, 520, 650, 760, 764, 950, 955, 988, 1040, 1235, 1300, 1520, 1528, 1900, 1910, 1976, 2470, 2483, 2600, 3056, 3629, 3800, 3820, 3952, 4775, 4940, 4966, 5200, 6175, 7258, 7600, 7640, 9550, 9880, 9932, 12350, 12415, 14516, 15280, 18145, 19100, 19760, 19864, 24700, 24830, 29032, 36290, 38200, 39728, 47177, 49400, 49660, 58064, 62075, 72580, 76400, 90725, 94354, 98800, 99320, 124150, 145160, 181450, 188708, 198640, 235885, 248300, 290320, 362900, 377416, 471770, 496600, 725800, 754832, 943540, 993200, 1179425, 1451600, 1887080, 2358850, 3774160, 4717700, 9435400, 18870800]

約数ペア:

[(1, 18870800), (2, 9435400), (4, 4717700), (5, 3774160), (8, 2358850), (10, 1887080), (13, 1451600), (16, 1179425), (19, 993200), (20, 943540), (25, 754832), (26, 725800), (38, 496600), (40, 471770), (50, 377416), (52, 362900), (65, 290320), (76, 248300), (80, 235885), (95, 198640), (100, 188708), (104, 181450), (130, 145160), (152, 124150), (190, 99320), (191, 98800), (200, 94354), (208, 90725), (247, 76400), (260, 72580), (304, 62075), (325, 58064), (380, 49660), (382, 49400), (400, 47177), (475, 39728), (494, 38200), (520, 36290), (650, 29032), (760, 24830), (764, 24700), (950, 19864), (955, 19760), (988, 19100), (1040, 18145), (1235, 15280), (1300, 14516), (1520, 12415), (1528, 12350), (1900, 9932), (1910, 9880), (1976, 9550), (2470, 7640), (2483, 7600), (2600, 7258), (3056, 6175), (3629, 5200), (3800, 4966), (3820, 4940), (3952, 4775)]