16981705

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{307}}^1$

素因数の和:385

約数の個数: 32

約数和(自身を含む): 23595264

約数和(自身を除く): 6613559

約数列:

[1, 5, 13, 23, 37, 65, 115, 185, 299, 307, 481, 851, 1495, 1535, 2405, 3991, 4255, 7061, 11063, 11359, 19955, 35305, 55315, 56795, 91793, 147667, 261257, 458965, 738335, 1306285, 3396341, 16981705]

約数ペア:

[(1, 16981705), (5, 3396341), (13, 1306285), (23, 738335), (37, 458965), (65, 261257), (115, 147667), (185, 91793), (299, 56795), (307, 55315), (481, 35305), (851, 19955), (1495, 11359), (1535, 11063), (2405, 7061), (3991, 4255)]