20107557

素因数分解:

$3^2\times {\mathrm{103}}^1\times {\mathrm{109}}^1\times {\mathrm{199}}^1$

素因数の和:417

約数の個数: 24

約数和(自身を含む): 29744000

約数和(自身を除く): 9636443

約数列:

[1, 3, 9, 103, 109, 199, 309, 327, 597, 927, 981, 1791, 11227, 20497, 21691, 33681, 61491, 65073, 101043, 184473, 195219, 2234173, 6702519, 20107557]

約数ペア:

[(1, 20107557), (3, 6702519), (9, 2234173), (103, 195219), (109, 184473), (199, 101043), (309, 65073), (327, 61491), (597, 33681), (927, 21691), (981, 20497), (1791, 11227)]