21397310

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{194521}}^1$

素因数の和:194539

約数の個数: 16

約数和(自身を含む): 42016752

約数和(自身を除く): 20619442

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 194521, 389042, 972605, 1945210, 2139731, 4279462, 10698655, 21397310]

約数ペア:

[(1, 21397310), (2, 10698655), (5, 4279462), (10, 2139731), (11, 1945210), (22, 972605), (55, 389042), (110, 194521)]