21396809

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{967}}^1$

素因数の和:1112

約数の個数: 16

約数和(自身を含む): 25555200

約数和(自身を除く): 4158391

約数列:

[1, 7, 29, 109, 203, 763, 967, 3161, 6769, 22127, 28043, 105403, 196301, 737821, 3056687, 21396809]

約数ペア:

[(1, 21396809), (7, 3056687), (29, 737821), (109, 196301), (203, 105403), (763, 28043), (967, 22127), (3161, 6769)]