20851472

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{367}}^1$

素因数の和:495

約数の個数: 40

約数和(自身を含む): 41890176

約数和(自身を除く): 21038704

約数列:

[1, 2, 4, 8, 16, 53, 67, 106, 134, 212, 268, 367, 424, 536, 734, 848, 1072, 1468, 2936, 3551, 5872, 7102, 14204, 19451, 24589, 28408, 38902, 49178, 56816, 77804, 98356, 155608, 196712, 311216, 393424, 1303217, 2606434, 5212868, 10425736, 20851472]

約数ペア:

[(1, 20851472), (2, 10425736), (4, 5212868), (8, 2606434), (16, 1303217), (53, 393424), (67, 311216), (106, 196712), (134, 155608), (212, 98356), (268, 77804), (367, 56816), (424, 49178), (536, 38902), (734, 28408), (848, 24589), (1072, 19451), (1468, 14204), (2936, 7102), (3551, 5872)]