21905325

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{7489}}^1$

素因数の和:7518

約数の個数: 36

約数和(自身を含む): 42258580

約数和(自身を除く): 20353255

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 195, 225, 325, 585, 975, 2925, 7489, 22467, 37445, 67401, 97357, 112335, 187225, 292071, 337005, 486785, 561675, 876213, 1460355, 1685025, 2433925, 4381065, 7301775, 21905325]

約数ペア:

[(1, 21905325), (3, 7301775), (5, 4381065), (9, 2433925), (13, 1685025), (15, 1460355), (25, 876213), (39, 561675), (45, 486785), (65, 337005), (75, 292071), (117, 187225), (195, 112335), (225, 97357), (325, 67401), (585, 37445), (975, 22467), (2925, 7489)]