80645180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{7481}}^1$

素因数の和:7515

約数の個数: 72

約数和(自身を含む): 214942896

約数和(自身を除く): 134297716

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 98, 110, 140, 154, 196, 220, 245, 308, 385, 490, 539, 770, 980, 1078, 1540, 2156, 2695, 5390, 7481, 10780, 14962, 29924, 37405, 52367, 74810, 82291, 104734, 149620, 164582, 209468, 261835, 329164, 366569, 411455, 523670, 576037, 733138, 822910, 1047340, 1152074, 1466276, 1645820, 1832845, 2304148, 2880185, 3665690, 4032259, 5760370, 7331380, 8064518, 11520740, 16129036, 20161295, 40322590, 80645180]

約数ペア:

[(1, 80645180), (2, 40322590), (4, 20161295), (5, 16129036), (7, 11520740), (10, 8064518), (11, 7331380), (14, 5760370), (20, 4032259), (22, 3665690), (28, 2880185), (35, 2304148), (44, 1832845), (49, 1645820), (55, 1466276), (70, 1152074), (77, 1047340), (98, 822910), (110, 733138), (140, 576037), (154, 523670), (196, 411455), (220, 366569), (245, 329164), (308, 261835), (385, 209468), (490, 164582), (539, 149620), (770, 104734), (980, 82291), (1078, 74810), (1540, 52367), (2156, 37405), (2695, 29924), (5390, 14962), (7481, 10780)]