800420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1291}}^1$

素因数の和:1331

約数の個数: 24

約数和(自身を含む): 1736448

約数和(自身を除く): 936028

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 1291, 2582, 5164, 6455, 12910, 25820, 40021, 80042, 160084, 200105, 400210, 800420]

約数ペア:

[(1, 800420), (2, 400210), (4, 200105), (5, 160084), (10, 80042), (20, 40021), (31, 25820), (62, 12910), (124, 6455), (155, 5164), (310, 2582), (620, 1291)]