25341640

素因数分解:

$2^3\times 5^1\times {\mathrm{409}}^1\times {\mathrm{1549}}^1$

素因数の和:1969

約数の個数: 32

約数和(自身を含む): 57195000

約数和(自身を除く): 31853360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 409, 818, 1549, 1636, 2045, 3098, 3272, 4090, 6196, 7745, 8180, 12392, 15490, 16360, 30980, 61960, 633541, 1267082, 2534164, 3167705, 5068328, 6335410, 12670820, 25341640]

約数ペア:

[(1, 25341640), (2, 12670820), (4, 6335410), (5, 5068328), (8, 3167705), (10, 2534164), (20, 1267082), (40, 633541), (409, 61960), (818, 30980), (1549, 16360), (1636, 15490), (2045, 12392), (3098, 8180), (3272, 7745), (4090, 6196)]