21423703

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{181}}^1\times {\mathrm{457}}^1$

素因数の和:682

約数の個数: 16

約数和(自身を含む): 25340224

約数和(自身を除く): 3916521

約数列:

[1, 7, 37, 181, 259, 457, 1267, 3199, 6697, 16909, 46879, 82717, 118363, 579019, 3060529, 21423703]

約数ペア:

[(1, 21423703), (7, 3060529), (37, 579019), (181, 118363), (259, 82717), (457, 46879), (1267, 16909), (3199, 6697)]