12221905

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{2719}}^1$

素因数の和:2784

約数の個数: 16

約数和(自身を含む): 15667200

約数和(自身を除く): 3445295

約数列:

[1, 5, 29, 31, 145, 155, 899, 2719, 4495, 13595, 78851, 84289, 394255, 421445, 2444381, 12221905]

約数ペア:

[(1, 12221905), (5, 2444381), (29, 421445), (31, 394255), (145, 84289), (155, 78851), (899, 13595), (2719, 4495)]