21870556

素因数分解:

$2^2\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{1453}}^1$

素因数の和:1581

約数の個数: 24

約数和(自身を含む): 39572064

約数和(自身を除く): 17701508

約数列:

[1, 2, 4, 53, 71, 106, 142, 212, 284, 1453, 2906, 3763, 5812, 7526, 15052, 77009, 103163, 154018, 206326, 308036, 412652, 5467639, 10935278, 21870556]

約数ペア:

[(1, 21870556), (2, 10935278), (4, 5467639), (53, 412652), (71, 308036), (106, 206326), (142, 154018), (212, 103163), (284, 77009), (1453, 15052), (2906, 7526), (3763, 5812)]