20000630

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{1123}}^1$

素因数の和:1280

約数の個数: 32

約数和(自身を含む): 39088224

約数和(自身を除く): 19087594

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 137, 274, 685, 1123, 1370, 1781, 2246, 3562, 5615, 8905, 11230, 14599, 17810, 29198, 72995, 145990, 153851, 307702, 769255, 1538510, 2000063, 4000126, 10000315, 20000630]

約数ペア:

[(1, 20000630), (2, 10000315), (5, 4000126), (10, 2000063), (13, 1538510), (26, 769255), (65, 307702), (130, 153851), (137, 145990), (274, 72995), (685, 29198), (1123, 17810), (1370, 14599), (1781, 11230), (2246, 8905), (3562, 5615)]