18697779

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{1009}}^1$

素因数の和:1115

約数の個数: 24

約数和(自身を含む): 28360800

約数和(自身を除く): 9663021

約数列:

[1, 3, 9, 29, 71, 87, 213, 261, 639, 1009, 2059, 3027, 6177, 9081, 18531, 29261, 71639, 87783, 214917, 263349, 644751, 2077531, 6232593, 18697779]

約数ペア:

[(1, 18697779), (3, 6232593), (9, 2077531), (29, 644751), (71, 263349), (87, 214917), (213, 87783), (261, 71639), (639, 29261), (1009, 18531), (2059, 9081), (3027, 6177)]