71342680

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{16363}}^1$

素因数の和:16483

約数の個数: 32

約数和(自身を含む): 162003600

約数和(自身を除く): 90660920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 16363, 32726, 65452, 81815, 130904, 163630, 327260, 654520, 1783567, 3567134, 7134268, 8917835, 14268536, 17835670, 35671340, 71342680]

約数ペア:

[(1, 71342680), (2, 35671340), (4, 17835670), (5, 14268536), (8, 8917835), (10, 7134268), (20, 3567134), (40, 1783567), (109, 654520), (218, 327260), (436, 163630), (545, 130904), (872, 81815), (1090, 65452), (2180, 32726), (4360, 16363)]