64649920

素因数分解:

$2^6\times 5^1\times {\mathrm{202031}}^1$

素因数の和:202048

約数の個数: 28

約数和(自身を含む): 153948384

約数和(自身を除く): 89298464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 202031, 404062, 808124, 1010155, 1616248, 2020310, 3232496, 4040620, 6464992, 8081240, 12929984, 16162480, 32324960, 64649920]

約数ペア:

[(1, 64649920), (2, 32324960), (4, 16162480), (5, 12929984), (8, 8081240), (10, 6464992), (16, 4040620), (20, 3232496), (32, 2020310), (40, 1616248), (64, 1010155), (80, 808124), (160, 404062), (320, 202031)]