21005584

素因数分解:

$2^4\times {\mathrm{557}}^1\times {\mathrm{2357}}^1$

素因数の和:2922

約数の個数: 20

約数和(自身を含む): 40788684

約数和(自身を除く): 19783100

約数列:

[1, 2, 4, 8, 16, 557, 1114, 2228, 2357, 4456, 4714, 8912, 9428, 18856, 37712, 1312849, 2625698, 5251396, 10502792, 21005584]

約数ペア:

[(1, 21005584), (2, 10502792), (4, 5251396), (8, 2625698), (16, 1312849), (557, 37712), (1114, 18856), (2228, 9428), (2357, 8912), (4456, 4714)]