128518780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{6257}}^1$

素因数の和:6358

約数の個数: 48

約数和(自身を含む): 294376320

約数和(自身を除く): 165857540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 130, 158, 260, 316, 395, 790, 1027, 1580, 2054, 4108, 5135, 6257, 10270, 12514, 20540, 25028, 31285, 62570, 81341, 125140, 162682, 325364, 406705, 494303, 813410, 988606, 1626820, 1977212, 2471515, 4943030, 6425939, 9886060, 12851878, 25703756, 32129695, 64259390, 128518780]

約数ペア:

[(1, 128518780), (2, 64259390), (4, 32129695), (5, 25703756), (10, 12851878), (13, 9886060), (20, 6425939), (26, 4943030), (52, 2471515), (65, 1977212), (79, 1626820), (130, 988606), (158, 813410), (260, 494303), (316, 406705), (395, 325364), (790, 162682), (1027, 125140), (1580, 81341), (2054, 62570), (4108, 31285), (5135, 25028), (6257, 20540), (10270, 12514)]