2991557121

素因数分解:

$3^1\times 7^1\times {\mathrm{1621}}^1\times {\mathrm{87881}}^1$

素因数の和:89512

約数の個数: 16

約数和(自身を含む): 4561427328

約数和(自身を除く): 1569870207

約数列:

[1, 3, 7, 21, 1621, 4863, 11347, 34041, 87881, 263643, 615167, 1845501, 142455101, 427365303, 997185707, 2991557121]

約数ペア:

[(1, 2991557121), (3, 997185707), (7, 427365303), (21, 142455101), (1621, 1845501), (4863, 615167), (11347, 263643), (34041, 87881)]