18891944

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{38713}}^1$

素因数の和:38780

約数の個数: 16

約数和(自身を含む): 36004020

約数和(自身を除く): 17112076

約数列:

[1, 2, 4, 8, 61, 122, 244, 488, 38713, 77426, 154852, 309704, 2361493, 4722986, 9445972, 18891944]

約数ペア:

[(1, 18891944), (2, 9445972), (4, 4722986), (8, 2361493), (61, 309704), (122, 154852), (244, 77426), (488, 38713)]