19679420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{31741}}^1$

素因数の和:31781

約数の個数: 24

約数和(自身を含む): 42661248

約数和(自身を除く): 22981828

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 31741, 63482, 126964, 158705, 317410, 634820, 983971, 1967942, 3935884, 4919855, 9839710, 19679420]

約数ペア:

[(1, 19679420), (2, 9839710), (4, 4919855), (5, 3935884), (10, 1967942), (20, 983971), (31, 634820), (62, 317410), (124, 158705), (155, 126964), (310, 63482), (620, 31741)]