21434872

素因数分解:

$2^3\times {\mathrm{409}}^1\times {\mathrm{6551}}^1$

素因数の和:6966

約数の個数: 16

約数和(自身を含む): 40294800

約数和(自身を除く): 18859928

約数列:

[1, 2, 4, 8, 409, 818, 1636, 3272, 6551, 13102, 26204, 52408, 2679359, 5358718, 10717436, 21434872]

約数ペア:

[(1, 21434872), (2, 10717436), (4, 5358718), (8, 2679359), (409, 52408), (818, 26204), (1636, 13102), (3272, 6551)]