21552853

素因数分解:

$7^1\times {\mathrm{103}}^1\times {\mathrm{167}}^1\times {\mathrm{179}}^1$

素因数の和:456

約数の個数: 16

約数和(自身を含む): 25159680

約数和(自身を除く): 3606827

約数列:

[1, 7, 103, 167, 179, 721, 1169, 1253, 17201, 18437, 29893, 120407, 129059, 209251, 3078979, 21552853]

約数ペア:

[(1, 21552853), (7, 3078979), (103, 209251), (167, 129059), (179, 120407), (721, 29893), (1169, 18437), (1253, 17201)]