21128848

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{101581}}^1$

素因数の和:101602

約数の個数: 20

約数和(自身を含む): 44086588

約数和(自身を除く): 22957740

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 101581, 203162, 406324, 812648, 1320553, 1625296, 2641106, 5282212, 10564424, 21128848]

約数ペア:

[(1, 21128848), (2, 10564424), (4, 5282212), (8, 2641106), (13, 1625296), (16, 1320553), (26, 812648), (52, 406324), (104, 203162), (208, 101581)]