257367621

素因数分解:

$3^1\times 7^1\times {\mathrm{661}}^1\times {\mathrm{18541}}^1$

素因数の和:19212

約数の個数: 16

約数和(自身を含む): 392793728

約数和(自身を除く): 135426107

約数列:

[1, 3, 7, 21, 661, 1983, 4627, 13881, 18541, 55623, 129787, 389361, 12255601, 36766803, 85789207, 257367621]

約数ペア:

[(1, 257367621), (3, 85789207), (7, 36766803), (21, 12255601), (661, 389361), (1983, 129787), (4627, 55623), (13881, 18541)]