12394420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{19991}}^1$

素因数の和:20031

約数の個数: 24

約数和(自身を含む): 26869248

約数和(自身を除く): 14474828

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 19991, 39982, 79964, 99955, 199910, 399820, 619721, 1239442, 2478884, 3098605, 6197210, 12394420]

約数ペア:

[(1, 12394420), (2, 6197210), (4, 3098605), (5, 2478884), (10, 1239442), (20, 619721), (31, 399820), (62, 199910), (124, 99955), (155, 79964), (310, 39982), (620, 19991)]