21117380

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{28537}}^1$

素因数の和:28583

約数の個数: 24

約数和(自身を含む): 45546648

約数和(自身を除く): 24429268

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 740, 28537, 57074, 114148, 142685, 285370, 570740, 1055869, 2111738, 4223476, 5279345, 10558690, 21117380]

約数ペア:

[(1, 21117380), (2, 10558690), (4, 5279345), (5, 4223476), (10, 2111738), (20, 1055869), (37, 570740), (74, 285370), (148, 142685), (185, 114148), (370, 57074), (740, 28537)]