81498221

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{227}}^1\times {\mathrm{431}}^1$

素因数の和:689

約数の個数: 24

約数和(自身を含む): 101056896

約数和(自身を除く): 19558675

約数列:

[1, 7, 17, 49, 119, 227, 431, 833, 1589, 3017, 3859, 7327, 11123, 21119, 27013, 51289, 97837, 189091, 359023, 684859, 1663229, 4794013, 11642603, 81498221]

約数ペア:

[(1, 81498221), (7, 11642603), (17, 4794013), (49, 1663229), (119, 684859), (227, 359023), (431, 189091), (833, 97837), (1589, 51289), (3017, 27013), (3859, 21119), (7327, 11123)]