28105580

素因数分解:

$2^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{8123}}^1$

素因数の和:8305

約数の個数: 24

約数和(自身を含む): 59370192

約数和(自身を除く): 31264612

約数列:

[1, 2, 4, 5, 10, 20, 173, 346, 692, 865, 1730, 3460, 8123, 16246, 32492, 40615, 81230, 162460, 1405279, 2810558, 5621116, 7026395, 14052790, 28105580]

約数ペア:

[(1, 28105580), (2, 14052790), (4, 7026395), (5, 5621116), (10, 2810558), (20, 1405279), (173, 162460), (346, 81230), (692, 40615), (865, 32492), (1730, 16246), (3460, 8123)]