42212121

素因数分解:

$3^1\times 7^1\times {\mathrm{661}}^1\times {\mathrm{3041}}^1$

素因数の和:3712

約数の個数: 16

約数和(自身を含む): 64441728

約数和(自身を除く): 22229607

約数列:

[1, 3, 7, 21, 661, 1983, 3041, 4627, 9123, 13881, 21287, 63861, 2010101, 6030303, 14070707, 42212121]

約数ペア:

[(1, 42212121), (3, 14070707), (7, 6030303), (21, 2010101), (661, 63861), (1983, 21287), (3041, 13881), (4627, 9123)]