25780420

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{44449}}^1$

素因数の和:44487

約数の個数: 24

約数和(自身を含む): 56007000

約数和(自身を除く): 30226580

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 44449, 88898, 177796, 222245, 444490, 888980, 1289021, 2578042, 5156084, 6445105, 12890210, 25780420]

約数ペア:

[(1, 25780420), (2, 12890210), (4, 6445105), (5, 5156084), (10, 2578042), (20, 1289021), (29, 888980), (58, 444490), (116, 222245), (145, 177796), (290, 88898), (580, 44449)]