64964380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{249863}}^1$

素因数の和:249885

約数の個数: 24

約数和(自身を含む): 146920032

約数和(自身を除く): 81955652

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 249863, 499726, 999452, 1249315, 2498630, 3248219, 4997260, 6496438, 12992876, 16241095, 32482190, 64964380]

約数ペア:

[(1, 64964380), (2, 32482190), (4, 16241095), (5, 12992876), (10, 6496438), (13, 4997260), (20, 3248219), (26, 2498630), (52, 1249315), (65, 999452), (130, 499726), (260, 249863)]