80689240

素因数分解:

$2^3\times 5^1\times {\mathrm{269}}^1\times {\mathrm{7499}}^1$

素因数の和:7779

約数の個数: 32

約数和(自身を含む): 182250000

約数和(自身を除く): 101560760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 269, 538, 1076, 1345, 2152, 2690, 5380, 7499, 10760, 14998, 29996, 37495, 59992, 74990, 149980, 299960, 2017231, 4034462, 8068924, 10086155, 16137848, 20172310, 40344620, 80689240]

約数ペア:

[(1, 80689240), (2, 40344620), (4, 20172310), (5, 16137848), (8, 10086155), (10, 8068924), (20, 4034462), (40, 2017231), (269, 299960), (538, 149980), (1076, 74990), (1345, 59992), (2152, 37495), (2690, 29996), (5380, 14998), (7499, 10760)]