18990720016

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{22394717}}^1$

素因数の和:22394778

約数の個数: 20

約数和(自身を含む): 37488757932

約数和(自身を除く): 18498037916

約数列:

[1, 2, 4, 8, 16, 53, 106, 212, 424, 848, 22394717, 44789434, 89578868, 179157736, 358315472, 1186920001, 2373840002, 4747680004, 9495360008, 18990720016]

約数ペア:

[(1, 18990720016), (2, 9495360008), (4, 4747680004), (8, 2373840002), (16, 1186920001), (53, 358315472), (106, 179157736), (212, 89578868), (424, 44789434), (848, 22394717)]