21008860

素因数分解:

$2^2\times 5^1\times {\mathrm{619}}^1\times {\mathrm{1697}}^1$

素因数の和:2325

約数の個数: 24

約数和(自身を含む): 44215920

約数和(自身を除く): 23207060

約数列:

[1, 2, 4, 5, 10, 20, 619, 1238, 1697, 2476, 3095, 3394, 6190, 6788, 8485, 12380, 16970, 33940, 1050443, 2100886, 4201772, 5252215, 10504430, 21008860]

約数ペア:

[(1, 21008860), (2, 10504430), (4, 5252215), (5, 4201772), (10, 2100886), (20, 1050443), (619, 33940), (1238, 16970), (1697, 12380), (2476, 8485), (3095, 6788), (3394, 6190)]