128417420

素因数分解:

$2^2\times 5^1\times {\mathrm{523}}^1\times {\mathrm{12277}}^1$

素因数の和:12809

約数の個数: 24

約数和(自身を含む): 270214224

約数和(自身を除く): 141796804

約数列:

[1, 2, 4, 5, 10, 20, 523, 1046, 2092, 2615, 5230, 10460, 12277, 24554, 49108, 61385, 122770, 245540, 6420871, 12841742, 25683484, 32104355, 64208710, 128417420]

約数ペア:

[(1, 128417420), (2, 64208710), (4, 32104355), (5, 25683484), (10, 12841742), (20, 6420871), (523, 245540), (1046, 122770), (2092, 61385), (2615, 49108), (5230, 24554), (10460, 12277)]