20201553

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{1187}}^1$

素因数の和:1285

約数の個数: 24

約数和(自身を含む): 30640896

約数和(自身を除く): 10439343

約数列:

[1, 3, 9, 31, 61, 93, 183, 279, 549, 1187, 1891, 3561, 5673, 10683, 17019, 36797, 72407, 110391, 217221, 331173, 651663, 2244617, 6733851, 20201553]

約数ペア:

[(1, 20201553), (3, 6733851), (9, 2244617), (31, 651663), (61, 331173), (93, 217221), (183, 110391), (279, 72407), (549, 36797), (1187, 17019), (1891, 10683), (3561, 5673)]