21581974

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{2677}}^1$

素因数の和:2847

約数の個数: 16

約数和(自身を含む): 33742800

約数和(自身を除く): 12160826

約数列:

[1, 2, 29, 58, 139, 278, 2677, 4031, 5354, 8062, 77633, 155266, 372103, 744206, 10790987, 21581974]

約数ペア:

[(1, 21581974), (2, 10790987), (29, 744206), (58, 372103), (139, 155266), (278, 77633), (2677, 8062), (4031, 5354)]