99979420

素因数分解:

$2^2\times 5^1\times {\mathrm{4998971}}^1$

素因数の和:4998980

約数の個数: 12

約数和(自身を含む): 209956824

約数和(自身を除く): 109977404

約数列:

[1, 2, 4, 5, 10, 20, 4998971, 9997942, 19995884, 24994855, 49989710, 99979420]

約数ペア:

[(1, 99979420), (2, 49989710), (4, 24994855), (5, 19995884), (10, 9997942), (20, 4998971)]