388908020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{627271}}^1$

素因数の和:627311

約数の個数: 24

約数和(自身を含む): 843053568

約数和(自身を除く): 454145548

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 627271, 1254542, 2509084, 3136355, 6272710, 12545420, 19445401, 38890802, 77781604, 97227005, 194454010, 388908020]

約数ペア:

[(1, 388908020), (2, 194454010), (4, 97227005), (5, 77781604), (10, 38890802), (20, 19445401), (31, 12545420), (62, 6272710), (124, 3136355), (155, 2509084), (310, 1254542), (620, 627271)]