21056275

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{457}}^1$

素因数の和:583

約数の個数: 24

約数和(自身を含む): 27828080

約数和(自身を除く): 6771805

約数列:

[1, 5, 19, 25, 95, 97, 457, 475, 485, 1843, 2285, 2425, 8683, 9215, 11425, 43415, 44329, 46075, 217075, 221645, 842251, 1108225, 4211255, 21056275]

約数ペア:

[(1, 21056275), (5, 4211255), (19, 1108225), (25, 842251), (95, 221645), (97, 217075), (457, 46075), (475, 44329), (485, 43415), (1843, 11425), (2285, 9215), (2425, 8683)]