21240156

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{293}}^1\times {\mathrm{863}}^1$

素因数の和:1170

約数の個数: 48

約数和(自身を含む): 56899584

約数和(自身を除く): 35659428

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 293, 586, 863, 879, 1172, 1726, 1758, 2051, 2589, 3452, 3516, 4102, 5178, 6041, 6153, 8204, 10356, 12082, 12306, 18123, 24164, 24612, 36246, 72492, 252859, 505718, 758577, 1011436, 1517154, 1770013, 3034308, 3540026, 5310039, 7080052, 10620078, 21240156]

約数ペア:

[(1, 21240156), (2, 10620078), (3, 7080052), (4, 5310039), (6, 3540026), (7, 3034308), (12, 1770013), (14, 1517154), (21, 1011436), (28, 758577), (42, 505718), (84, 252859), (293, 72492), (586, 36246), (863, 24612), (879, 24164), (1172, 18123), (1726, 12306), (1758, 12082), (2051, 10356), (2589, 8204), (3452, 6153), (3516, 6041), (4102, 5178)]