209215779

素因数分解:

$3^1\times {\mathrm{79}}^1\times {\mathrm{251}}^1\times {\mathrm{3517}}^1$

素因数の和:3850

約数の個数: 16

約数和(自身を含む): 283691520

約数和(自身を除く): 74475741

約数列:

[1, 3, 79, 237, 251, 753, 3517, 10551, 19829, 59487, 277843, 833529, 882767, 2648301, 69738593, 209215779]

約数ペア:

[(1, 209215779), (3, 69738593), (79, 2648301), (237, 882767), (251, 833529), (753, 277843), (3517, 59487), (10551, 19829)]