21909075

素因数分解:

$3^1\times 5^2\times {\mathrm{293}}^1\times {\mathrm{997}}^1$

素因数の和:1303

約数の個数: 24

約数和(自身を含む): 36383088

約数和(自身を除く): 14474013

約数列:

[1, 3, 5, 15, 25, 75, 293, 879, 997, 1465, 2991, 4395, 4985, 7325, 14955, 21975, 24925, 74775, 292121, 876363, 1460605, 4381815, 7303025, 21909075]

約数ペア:

[(1, 21909075), (3, 7303025), (5, 4381815), (15, 1460605), (25, 876363), (75, 292121), (293, 74775), (879, 24925), (997, 21975), (1465, 14955), (2991, 7325), (4395, 4985)]