1398984920

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{421381}}^1$

素因数の和:421475

約数の個数: 32

約数和(自身を含む): 3185647920

約数和(自身を除く): 1786663000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 421381, 842762, 1685524, 2106905, 3371048, 4213810, 8427620, 16855240, 34974623, 69949246, 139898492, 174873115, 279796984, 349746230, 699492460, 1398984920]

約数ペア:

[(1, 1398984920), (2, 699492460), (4, 349746230), (5, 279796984), (8, 174873115), (10, 139898492), (20, 69949246), (40, 34974623), (83, 16855240), (166, 8427620), (332, 4213810), (415, 3371048), (664, 2106905), (830, 1685524), (1660, 842762), (3320, 421381)]