720512390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{70157}}^1$

素因数の和:70256

約数の個数: 32

約数和(自身を含む): 1414385280

約数和(自身を除く): 693872890

約数列:

[1, 2, 5, 10, 13, 26, 65, 79, 130, 158, 395, 790, 1027, 2054, 5135, 10270, 70157, 140314, 350785, 701570, 912041, 1824082, 4560205, 5542403, 9120410, 11084806, 27712015, 55424030, 72051239, 144102478, 360256195, 720512390]

約数ペア:

[(1, 720512390), (2, 360256195), (5, 144102478), (10, 72051239), (13, 55424030), (26, 27712015), (65, 11084806), (79, 9120410), (130, 5542403), (158, 4560205), (395, 1824082), (790, 912041), (1027, 701570), (2054, 350785), (5135, 140314), (10270, 70157)]