20906402

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{523}}^1$

素因数の和:638

約数の個数: 32

約数和(自身を含む): 36218880

約数和(自身を除く): 15312478

約数列:

[1, 2, 11, 22, 23, 46, 79, 158, 253, 506, 523, 869, 1046, 1738, 1817, 3634, 5753, 11506, 12029, 19987, 24058, 39974, 41317, 82634, 132319, 264638, 454487, 908974, 950291, 1900582, 10453201, 20906402]

約数ペア:

[(1, 20906402), (2, 10453201), (11, 1900582), (22, 950291), (23, 908974), (46, 454487), (79, 264638), (158, 132319), (253, 82634), (506, 41317), (523, 39974), (869, 24058), (1046, 19987), (1738, 12029), (1817, 11506), (3634, 5753)]