20781528

素因数分解:

$2^3\times 3^1\times {\mathrm{239}}^1\times {\mathrm{3623}}^1$

素因数の和:3871

約数の個数: 32

約数和(自身を含む): 52185600

約数和(自身を除く): 31404072

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 239, 478, 717, 956, 1434, 1912, 2868, 3623, 5736, 7246, 10869, 14492, 21738, 28984, 43476, 86952, 865897, 1731794, 2597691, 3463588, 5195382, 6927176, 10390764, 20781528]

約数ペア:

[(1, 20781528), (2, 10390764), (3, 6927176), (4, 5195382), (6, 3463588), (8, 2597691), (12, 1731794), (24, 865897), (239, 86952), (478, 43476), (717, 28984), (956, 21738), (1434, 14492), (1912, 10869), (2868, 7246), (3623, 5736)]