20497250

素因数分解:

$2^1\times 5^3\times {\mathrm{163}}^1\times {\mathrm{503}}^1$

素因数の和:683

約数の個数: 32

約数和(自身を含む): 38683008

約数和(自身を除く): 18185758

約数列:

[1, 2, 5, 10, 25, 50, 125, 163, 250, 326, 503, 815, 1006, 1630, 2515, 4075, 5030, 8150, 12575, 20375, 25150, 40750, 62875, 81989, 125750, 163978, 409945, 819890, 2049725, 4099450, 10248625, 20497250]

約数ペア:

[(1, 20497250), (2, 10248625), (5, 4099450), (10, 2049725), (25, 819890), (50, 409945), (125, 163978), (163, 125750), (250, 81989), (326, 62875), (503, 40750), (815, 25150), (1006, 20375), (1630, 12575), (2515, 8150), (4075, 5030)]