21281660

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{28759}}^1$

素因数の和:28805

約数の個数: 24

約数和(自身を含む): 45900960

約数和(自身を除く): 24619300

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 740, 28759, 57518, 115036, 143795, 287590, 575180, 1064083, 2128166, 4256332, 5320415, 10640830, 21281660]

約数ペア:

[(1, 21281660), (2, 10640830), (4, 5320415), (5, 4256332), (10, 2128166), (20, 1064083), (37, 575180), (74, 287590), (148, 143795), (185, 115036), (370, 57518), (740, 28759)]