80249780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{3907}}^1$

素因数の和:4008

約数の個数: 48

約数和(自身を含む): 183832320

約数和(自身を除く): 103582540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 130, 158, 260, 316, 395, 790, 1027, 1580, 2054, 3907, 4108, 5135, 7814, 10270, 15628, 19535, 20540, 39070, 50791, 78140, 101582, 203164, 253955, 308653, 507910, 617306, 1015820, 1234612, 1543265, 3086530, 4012489, 6173060, 8024978, 16049956, 20062445, 40124890, 80249780]

約数ペア:

[(1, 80249780), (2, 40124890), (4, 20062445), (5, 16049956), (10, 8024978), (13, 6173060), (20, 4012489), (26, 3086530), (52, 1543265), (65, 1234612), (79, 1015820), (130, 617306), (158, 507910), (260, 308653), (316, 253955), (395, 203164), (790, 101582), (1027, 78140), (1580, 50791), (2054, 39070), (3907, 20540), (4108, 19535), (5135, 15628), (7814, 10270)]