21836787

素因数分解:

$3^1\times 7^1\times {\mathrm{547}}^1\times {\mathrm{1901}}^1$

素因数の和:2458

約数の個数: 16

約数和(自身を含む): 33353472

約数和(自身を除く): 11516685

約数列:

[1, 3, 7, 21, 547, 1641, 1901, 3829, 5703, 11487, 13307, 39921, 1039847, 3119541, 7278929, 21836787]

約数ペア:

[(1, 21836787), (3, 7278929), (7, 3119541), (21, 1039847), (547, 39921), (1641, 13307), (1901, 11487), (3829, 5703)]