21357968

素因数分解:

$2^4\times {\mathrm{563}}^1\times {\mathrm{2371}}^1$

素因数の和:2942

約数の個数: 20

約数和(自身を含む): 41472048

約数和(自身を除く): 20114080

約数列:

[1, 2, 4, 8, 16, 563, 1126, 2252, 2371, 4504, 4742, 9008, 9484, 18968, 37936, 1334873, 2669746, 5339492, 10678984, 21357968]

約数ペア:

[(1, 21357968), (2, 10678984), (4, 5339492), (8, 2669746), (16, 1334873), (563, 37936), (1126, 18968), (2252, 9484), (2371, 9008), (4504, 4742)]