15163220

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{1949}}^1$

素因数の和:2347

約数の個数: 24

約数和(自身を含む): 31941000

約数和(自身を除く): 16777780

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1556, 1945, 1949, 3890, 3898, 7780, 7796, 9745, 19490, 38980, 758161, 1516322, 3032644, 3790805, 7581610, 15163220]

約数ペア:

[(1, 15163220), (2, 7581610), (4, 3790805), (5, 3032644), (10, 1516322), (20, 758161), (389, 38980), (778, 19490), (1556, 9745), (1945, 7796), (1949, 7780), (3890, 3898)]