21920780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{156577}}^1$

素因数の和:156593

約数の個数: 24

約数和(自身を含む): 52610208

約数和(自身を除く): 30689428

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 156577, 313154, 626308, 782885, 1096039, 1565770, 2192078, 3131540, 4384156, 5480195, 10960390, 21920780]

約数ペア:

[(1, 21920780), (2, 10960390), (4, 5480195), (5, 4384156), (7, 3131540), (10, 2192078), (14, 1565770), (20, 1096039), (28, 782885), (35, 626308), (70, 313154), (140, 156577)]