21781140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{363019}}^1$

素因数の和:363031

約数の個数: 24

約数和(自身を含む): 60987360

約数和(自身を除く): 39206220

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 363019, 726038, 1089057, 1452076, 1815095, 2178114, 3630190, 4356228, 5445285, 7260380, 10890570, 21781140]

約数ペア:

[(1, 21781140), (2, 10890570), (3, 7260380), (4, 5445285), (5, 4356228), (6, 3630190), (10, 2178114), (12, 1815095), (15, 1452076), (20, 1089057), (30, 726038), (60, 363019)]