21401540

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{28921}}^1$

素因数の和:28967

約数の個数: 24

約数和(自身を含む): 46159512

約数和(自身を除く): 24757972

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 740, 28921, 57842, 115684, 144605, 289210, 578420, 1070077, 2140154, 4280308, 5350385, 10700770, 21401540]

約数ペア:

[(1, 21401540), (2, 10700770), (4, 5350385), (5, 4280308), (10, 2140154), (20, 1070077), (37, 578420), (74, 289210), (148, 144605), (185, 115684), (370, 57842), (740, 28921)]