21386740

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{28901}}^1$

素因数の和:28947

約数の個数: 24

約数和(自身を含む): 46127592

約数和(自身を除く): 24740852

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 740, 28901, 57802, 115604, 144505, 289010, 578020, 1069337, 2138674, 4277348, 5346685, 10693370, 21386740]

約数ペア:

[(1, 21386740), (2, 10693370), (4, 5346685), (5, 4277348), (10, 2138674), (20, 1069337), (37, 578020), (74, 289010), (148, 144505), (185, 115604), (370, 57802), (740, 28901)]