21739210

素因数分解:

$2^1\times 5^1\times {\mathrm{349}}^1\times {\mathrm{6229}}^1$

素因数の和:6585

約数の個数: 16

約数和(自身を含む): 39249000

約数和(自身を除く): 17509790

約数列:

[1, 2, 5, 10, 349, 698, 1745, 3490, 6229, 12458, 31145, 62290, 2173921, 4347842, 10869605, 21739210]

約数ペア:

[(1, 21739210), (2, 10869605), (5, 4347842), (10, 2173921), (349, 62290), (698, 31145), (1745, 12458), (3490, 6229)]