18362840

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{4457}}^1$

素因数の和:4571

約数の個数: 32

約数和(自身を含む): 41726880

約数和(自身を除く): 23364040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 4457, 8914, 17828, 22285, 35656, 44570, 89140, 178280, 459071, 918142, 1836284, 2295355, 3672568, 4590710, 9181420, 18362840]

約数ペア:

[(1, 18362840), (2, 9181420), (4, 4590710), (5, 3672568), (8, 2295355), (10, 1836284), (20, 918142), (40, 459071), (103, 178280), (206, 89140), (412, 44570), (515, 35656), (824, 22285), (1030, 17828), (2060, 8914), (4120, 4457)]