81240848

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{390581}}^1$

素因数の和:390602

約数の個数: 20

約数和(自身を含む): 169512588

約数和(自身を除く): 88271740

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 390581, 781162, 1562324, 3124648, 5077553, 6249296, 10155106, 20310212, 40620424, 81240848]

約数ペア:

[(1, 81240848), (2, 40620424), (4, 20310212), (8, 10155106), (13, 6249296), (16, 5077553), (26, 3124648), (52, 1562324), (104, 781162), (208, 390581)]