128800520

素因数分解:

$2^3\times 5^1\times {\mathrm{1459}}^1\times {\mathrm{2207}}^1$

素因数の和:3677

約数の個数: 32

約数和(自身を含む): 290131200

約数和(自身を除く): 161330680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1459, 2207, 2918, 4414, 5836, 7295, 8828, 11035, 11672, 14590, 17656, 22070, 29180, 44140, 58360, 88280, 3220013, 6440026, 12880052, 16100065, 25760104, 32200130, 64400260, 128800520]

約数ペア:

[(1, 128800520), (2, 64400260), (4, 32200130), (5, 25760104), (8, 16100065), (10, 12880052), (20, 6440026), (40, 3220013), (1459, 88280), (2207, 58360), (2918, 44140), (4414, 29180), (5836, 22070), (7295, 17656), (8828, 14590), (11035, 11672)]