20125481715

素因数分解:

$3^2\times 5^1\times {\mathrm{647}}^1\times {\mathrm{691241}}^1$

素因数の和:691899

約数の個数: 24

約数和(自身を含む): 34938135648

約数和(自身を除く): 14812653933

約数列:

[1, 3, 5, 9, 15, 45, 647, 1941, 3235, 5823, 9705, 29115, 691241, 2073723, 3456205, 6221169, 10368615, 31105845, 447232927, 1341698781, 2236164635, 4025096343, 6708493905, 20125481715]

約数ペア:

[(1, 20125481715), (3, 6708493905), (5, 4025096343), (9, 2236164635), (15, 1341698781), (45, 447232927), (647, 31105845), (1941, 10368615), (3235, 6221169), (5823, 3456205), (9705, 2073723), (29115, 691241)]