21653140

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{1009}}^1$

素因数の和:1084

約数の個数: 48

約数和(自身を含む): 48358800

約数和(自身を除く): 26705660

約数列:

[1, 2, 4, 5, 10, 20, 29, 37, 58, 74, 116, 145, 148, 185, 290, 370, 580, 740, 1009, 1073, 2018, 2146, 4036, 4292, 5045, 5365, 10090, 10730, 20180, 21460, 29261, 37333, 58522, 74666, 117044, 146305, 149332, 186665, 292610, 373330, 585220, 746660, 1082657, 2165314, 4330628, 5413285, 10826570, 21653140]

約数ペア:

[(1, 21653140), (2, 10826570), (4, 5413285), (5, 4330628), (10, 2165314), (20, 1082657), (29, 746660), (37, 585220), (58, 373330), (74, 292610), (116, 186665), (145, 149332), (148, 146305), (185, 117044), (290, 74666), (370, 58522), (580, 37333), (740, 29261), (1009, 21460), (1073, 20180), (2018, 10730), (2146, 10090), (4036, 5365), (4292, 5045)]