21699550

素因数分解:

$2^1\times 5^2\times {\mathrm{197}}^1\times {\mathrm{2203}}^1$

素因数の和:2412

約数の個数: 24

約数和(自身を含む): 40584456

約数和(自身を除く): 18884906

約数列:

[1, 2, 5, 10, 25, 50, 197, 394, 985, 1970, 2203, 4406, 4925, 9850, 11015, 22030, 55075, 110150, 433991, 867982, 2169955, 4339910, 10849775, 21699550]

約数ペア:

[(1, 21699550), (2, 10849775), (5, 4339910), (10, 2169955), (25, 867982), (50, 433991), (197, 110150), (394, 55075), (985, 22030), (1970, 11015), (2203, 9850), (4406, 4925)]