25409680

素因数分解:

$2^4\times 5^1\times {\mathrm{317621}}^1$

素因数の和:317634

約数の個数: 20

約数和(自身を含む): 59077692

約数和(自身を除く): 33668012

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 317621, 635242, 1270484, 1588105, 2540968, 3176210, 5081936, 6352420, 12704840, 25409680]

約数ペア:

[(1, 25409680), (2, 12704840), (4, 6352420), (5, 5081936), (8, 3176210), (10, 2540968), (16, 1588105), (20, 1270484), (40, 635242), (80, 317621)]