320887060

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{139}}^1\times {\mathrm{683}}^1$

素因数の和:857

約数の個数: 72

約数和(自身を含む): 736011360

約数和(自身を除く): 415124300

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 139, 169, 260, 278, 338, 556, 676, 683, 695, 845, 1366, 1390, 1690, 1807, 2732, 2780, 3380, 3415, 3614, 6830, 7228, 8879, 9035, 13660, 17758, 18070, 23491, 35516, 36140, 44395, 46982, 88790, 93964, 94937, 115427, 117455, 177580, 189874, 230854, 234910, 379748, 461708, 469820, 474685, 577135, 949370, 1154270, 1234181, 1898740, 2308540, 2468362, 4936724, 6170905, 12341810, 16044353, 24683620, 32088706, 64177412, 80221765, 160443530, 320887060]

約数ペア:

[(1, 320887060), (2, 160443530), (4, 80221765), (5, 64177412), (10, 32088706), (13, 24683620), (20, 16044353), (26, 12341810), (52, 6170905), (65, 4936724), (130, 2468362), (139, 2308540), (169, 1898740), (260, 1234181), (278, 1154270), (338, 949370), (556, 577135), (676, 474685), (683, 469820), (695, 461708), (845, 379748), (1366, 234910), (1390, 230854), (1690, 189874), (1807, 177580), (2732, 117455), (2780, 115427), (3380, 94937), (3415, 93964), (3614, 88790), (6830, 46982), (7228, 44395), (8879, 36140), (9035, 35516), (13660, 23491), (17758, 18070)]