1289016760

素因数分解:

$2^3\times 5^1\times {\mathrm{3581}}^1\times {\mathrm{8999}}^1$

素因数の和:12591

約数の個数: 32

約数和(自身を含む): 2901420000

約数和(自身を除く): 1612403240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3581, 7162, 8999, 14324, 17905, 17998, 28648, 35810, 35996, 44995, 71620, 71992, 89990, 143240, 179980, 359960, 32225419, 64450838, 128901676, 161127095, 257803352, 322254190, 644508380, 1289016760]

約数ペア:

[(1, 1289016760), (2, 644508380), (4, 322254190), (5, 257803352), (8, 161127095), (10, 128901676), (20, 64450838), (40, 32225419), (3581, 359960), (7162, 179980), (8999, 143240), (14324, 89990), (17905, 71992), (17998, 71620), (28648, 44995), (35810, 35996)]