25660840

素因数分解:

$2^3\times 5^1\times {\mathrm{641521}}^1$

素因数の和:641532

約数の個数: 16

約数和(自身を含む): 57736980

約数和(自身を除く): 32076140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 641521, 1283042, 2566084, 3207605, 5132168, 6415210, 12830420, 25660840]

約数ペア:

[(1, 25660840), (2, 12830420), (4, 6415210), (5, 5132168), (8, 3207605), (10, 2566084), (20, 1283042), (40, 641521)]