21130408

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{15629}}^1$

素因数の和:15661

約数の個数: 24

約数和(自身を含む): 42904350

約数和(自身を除く): 21773942

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 169, 338, 676, 1352, 15629, 31258, 62516, 125032, 203177, 406354, 812708, 1625416, 2641301, 5282602, 10565204, 21130408]

約数ペア:

[(1, 21130408), (2, 10565204), (4, 5282602), (8, 2641301), (13, 1625416), (26, 812708), (52, 406354), (104, 203177), (169, 125032), (338, 62516), (676, 31258), (1352, 15629)]