21475017

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{349}}^1$

素因数の和:454

約数の個数: 32

約数和(自身を含む): 33264000

約数和(自身を除く): 11788983

約数列:

[1, 3, 9, 27, 43, 53, 129, 159, 349, 387, 477, 1047, 1161, 1431, 2279, 3141, 6837, 9423, 15007, 18497, 20511, 45021, 55491, 61533, 135063, 166473, 405189, 499419, 795371, 2386113, 7158339, 21475017]

約数ペア:

[(1, 21475017), (3, 7158339), (9, 2386113), (27, 795371), (43, 499419), (53, 405189), (129, 166473), (159, 135063), (349, 61533), (387, 55491), (477, 45021), (1047, 20511), (1161, 18497), (1431, 15007), (2279, 9423), (3141, 6837)]