20407120

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{4813}}^1$

素因数の和:4879

約数の個数: 40

約数和(自身を含む): 48351816

約数和(自身を除く): 27944696

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 212, 265, 424, 530, 848, 1060, 2120, 4240, 4813, 9626, 19252, 24065, 38504, 48130, 77008, 96260, 192520, 255089, 385040, 510178, 1020356, 1275445, 2040712, 2550890, 4081424, 5101780, 10203560, 20407120]

約数ペア:

[(1, 20407120), (2, 10203560), (4, 5101780), (5, 4081424), (8, 2550890), (10, 2040712), (16, 1275445), (20, 1020356), (40, 510178), (53, 385040), (80, 255089), (106, 192520), (212, 96260), (265, 77008), (424, 48130), (530, 38504), (848, 24065), (1060, 19252), (2120, 9626), (4240, 4813)]