20830257

素因数分解:

$3^3\times 7^1\times {\mathrm{307}}^1\times {\mathrm{359}}^1$

素因数の和:682

約数の個数: 32

約数和(自身を含む): 35481600

約数和(自身を除く): 14651343

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 307, 359, 921, 1077, 2149, 2513, 2763, 3231, 6447, 7539, 8289, 9693, 19341, 22617, 58023, 67851, 110213, 330639, 771491, 991917, 2314473, 2975751, 6943419, 20830257]

約数ペア:

[(1, 20830257), (3, 6943419), (7, 2975751), (9, 2314473), (21, 991917), (27, 771491), (63, 330639), (189, 110213), (307, 67851), (359, 58023), (921, 22617), (1077, 19341), (2149, 9693), (2513, 8289), (2763, 7539), (3231, 6447)]