21461775

素因数分解:

$3^1\times 5^2\times {\mathrm{67}}^1\times {\mathrm{4271}}^1$

素因数の和:4351

約数の個数: 24

約数和(自身を含む): 36021504

約数和(自身を除く): 14559729

約数列:

[1, 3, 5, 15, 25, 67, 75, 201, 335, 1005, 1675, 4271, 5025, 12813, 21355, 64065, 106775, 286157, 320325, 858471, 1430785, 4292355, 7153925, 21461775]

約数ペア:

[(1, 21461775), (3, 7153925), (5, 4292355), (15, 1430785), (25, 858471), (67, 320325), (75, 286157), (201, 106775), (335, 64065), (1005, 21355), (1675, 12813), (4271, 5025)]