20555227

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{383}}^1$

素因数の和:459

約数の個数: 32

約数和(自身を含む): 27869184

約数和(自身を除く): 7313957

約数列:

[1, 7, 11, 17, 41, 77, 119, 187, 287, 383, 451, 697, 1309, 2681, 3157, 4213, 4879, 6511, 7667, 15703, 29491, 45577, 53669, 71621, 109921, 172733, 266951, 501347, 1209131, 1868657, 2936461, 20555227]

約数ペア:

[(1, 20555227), (7, 2936461), (11, 1868657), (17, 1209131), (41, 501347), (77, 266951), (119, 172733), (187, 109921), (287, 71621), (383, 53669), (451, 45577), (697, 29491), (1309, 15703), (2681, 7667), (3157, 6511), (4213, 4879)]