318205420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1223867}}^1$

素因数の和:1223889

約数の個数: 24

約数和(自身を含む): 719634384

約数和(自身を除く): 401428964

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 1223867, 2447734, 4895468, 6119335, 12238670, 15910271, 24477340, 31820542, 63641084, 79551355, 159102710, 318205420]

約数ペア:

[(1, 318205420), (2, 159102710), (4, 79551355), (5, 63641084), (10, 31820542), (13, 24477340), (20, 15910271), (26, 12238670), (52, 6119335), (65, 4895468), (130, 2447734), (260, 1223867)]