18693680

素因数分解:

$2^4\times 5^1\times {\mathrm{181}}^1\times {\mathrm{1291}}^1$

素因数の和:1485

約数の個数: 40

約数和(自身を含む): 43736784

約数和(自身を除く): 25043104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 181, 362, 724, 905, 1291, 1448, 1810, 2582, 2896, 3620, 5164, 6455, 7240, 10328, 12910, 14480, 20656, 25820, 51640, 103280, 233671, 467342, 934684, 1168355, 1869368, 2336710, 3738736, 4673420, 9346840, 18693680]

約数ペア:

[(1, 18693680), (2, 9346840), (4, 4673420), (5, 3738736), (8, 2336710), (10, 1869368), (16, 1168355), (20, 934684), (40, 467342), (80, 233671), (181, 103280), (362, 51640), (724, 25820), (905, 20656), (1291, 14480), (1448, 12910), (1810, 10328), (2582, 7240), (2896, 6455), (3620, 5164)]