129620020

素因数分解:

$2^2\times 5^1\times {\mathrm{631}}^1\times {\mathrm{10271}}^1$

素因数の和:10911

約数の個数: 24

約数和(自身を含む): 272659968

約数和(自身を除く): 143039948

約数列:

[1, 2, 4, 5, 10, 20, 631, 1262, 2524, 3155, 6310, 10271, 12620, 20542, 41084, 51355, 102710, 205420, 6481001, 12962002, 25924004, 32405005, 64810010, 129620020]

約数ペア:

[(1, 129620020), (2, 64810010), (4, 32405005), (5, 25924004), (10, 12962002), (20, 6481001), (631, 205420), (1262, 102710), (2524, 51355), (3155, 41084), (6310, 20542), (10271, 12620)]