21756413

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{7949}}^1$

素因数の和:7996

約数の個数: 16

約数和(自身を含む): 27475200

約数和(自身を除く): 5718787

約数列:

[1, 7, 17, 23, 119, 161, 391, 2737, 7949, 55643, 135133, 182827, 945931, 1279789, 3108059, 21756413]

約数ペア:

[(1, 21756413), (7, 3108059), (17, 1279789), (23, 945931), (119, 182827), (161, 135133), (391, 55643), (2737, 7949)]