18891080

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2137}}^1$

素因数の和:2178

約数の個数: 64

約数和(自身を含む): 48489840

約数和(自身を除く): 29598760

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 52, 65, 68, 85, 104, 130, 136, 170, 221, 260, 340, 442, 520, 680, 884, 1105, 1768, 2137, 2210, 4274, 4420, 8548, 8840, 10685, 17096, 21370, 27781, 36329, 42740, 55562, 72658, 85480, 111124, 138905, 145316, 181645, 222248, 277810, 290632, 363290, 472277, 555620, 726580, 944554, 1111240, 1453160, 1889108, 2361385, 3778216, 4722770, 9445540, 18891080]

約数ペア:

[(1, 18891080), (2, 9445540), (4, 4722770), (5, 3778216), (8, 2361385), (10, 1889108), (13, 1453160), (17, 1111240), (20, 944554), (26, 726580), (34, 555620), (40, 472277), (52, 363290), (65, 290632), (68, 277810), (85, 222248), (104, 181645), (130, 145316), (136, 138905), (170, 111124), (221, 85480), (260, 72658), (340, 55562), (442, 42740), (520, 36329), (680, 27781), (884, 21370), (1105, 17096), (1768, 10685), (2137, 8840), (2210, 8548), (4274, 4420)]