21137168

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{7817}}^1$

素因数の和:7851

約数の個数: 30

約数和(自身を含む): 44351514

約数和(自身を除く): 23214346

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 169, 208, 338, 676, 1352, 2704, 7817, 15634, 31268, 62536, 101621, 125072, 203242, 406484, 812968, 1321073, 1625936, 2642146, 5284292, 10568584, 21137168]

約数ペア:

[(1, 21137168), (2, 10568584), (4, 5284292), (8, 2642146), (13, 1625936), (16, 1321073), (26, 812968), (52, 406484), (104, 203242), (169, 125072), (208, 101621), (338, 62536), (676, 31268), (1352, 15634), (2704, 7817)]