645780538

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{821}}^1\times {\mathrm{30253}}^1$

素因数の和:31089

約数の個数: 16

約数和(自身を含む): 1044489096

約数和(自身を除く): 398708558

約数列:

[1, 2, 13, 26, 821, 1642, 10673, 21346, 30253, 60506, 393289, 786578, 24837713, 49675426, 322890269, 645780538]

約数ペア:

[(1, 645780538), (2, 322890269), (13, 49675426), (26, 24837713), (821, 786578), (1642, 393289), (10673, 60506), (21346, 30253)]