18089240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{809}}^1$

素因数の和:876

約数の個数: 64

約数和(自身を含む): 44906400

約数和(自身を除く): 26817160

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 43, 52, 65, 86, 104, 130, 172, 215, 260, 344, 430, 520, 559, 809, 860, 1118, 1618, 1720, 2236, 2795, 3236, 4045, 4472, 5590, 6472, 8090, 10517, 11180, 16180, 21034, 22360, 32360, 34787, 42068, 52585, 69574, 84136, 105170, 139148, 173935, 210340, 278296, 347870, 420680, 452231, 695740, 904462, 1391480, 1808924, 2261155, 3617848, 4522310, 9044620, 18089240]

約数ペア:

[(1, 18089240), (2, 9044620), (4, 4522310), (5, 3617848), (8, 2261155), (10, 1808924), (13, 1391480), (20, 904462), (26, 695740), (40, 452231), (43, 420680), (52, 347870), (65, 278296), (86, 210340), (104, 173935), (130, 139148), (172, 105170), (215, 84136), (260, 69574), (344, 52585), (430, 42068), (520, 34787), (559, 32360), (809, 22360), (860, 21034), (1118, 16180), (1618, 11180), (1720, 10517), (2236, 8090), (2795, 6472), (3236, 5590), (4045, 4472)]