21425390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{2027}}^1$

素因数の和:2192

約数の個数: 32

約数和(自身を含む): 44388864

約数和(自身を除く): 22963474

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 151, 302, 755, 1057, 1510, 2027, 2114, 4054, 5285, 10135, 10570, 14189, 20270, 28378, 70945, 141890, 306077, 612154, 1530385, 2142539, 3060770, 4285078, 10712695, 21425390]

約数ペア:

[(1, 21425390), (2, 10712695), (5, 4285078), (7, 3060770), (10, 2142539), (14, 1530385), (35, 612154), (70, 306077), (151, 141890), (302, 70945), (755, 28378), (1057, 20270), (1510, 14189), (2027, 10570), (2114, 10135), (4054, 5285)]