31685420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{121867}}^1$

素因数の和:121889

約数の個数: 24

約数和(自身を含む): 71658384

約数和(自身を除く): 39972964

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 121867, 243734, 487468, 609335, 1218670, 1584271, 2437340, 3168542, 6337084, 7921355, 15842710, 31685420]

約数ペア:

[(1, 31685420), (2, 15842710), (4, 7921355), (5, 6337084), (10, 3168542), (13, 2437340), (20, 1584271), (26, 1218670), (52, 609335), (65, 487468), (130, 243734), (260, 121867)]