64040420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{103291}}^1$

素因数の和:103331

約数の個数: 24

約数和(自身を含む): 138824448

約数和(自身を除く): 74784028

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 103291, 206582, 413164, 516455, 1032910, 2065820, 3202021, 6404042, 12808084, 16010105, 32020210, 64040420]

約数ペア:

[(1, 64040420), (2, 32020210), (4, 16010105), (5, 12808084), (10, 6404042), (20, 3202021), (31, 2065820), (62, 1032910), (124, 516455), (155, 413164), (310, 206582), (620, 103291)]