19721207

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{647}}^1$

素因数の和:838

約数の個数: 16

約数和(自身を含む): 22954752

約数和(自身を除く): 3233545

約数列:

[1, 11, 17, 163, 187, 647, 1793, 2771, 7117, 10999, 30481, 105461, 120989, 1160071, 1792837, 19721207]

約数ペア:

[(1, 19721207), (11, 1792837), (17, 1160071), (163, 120989), (187, 105461), (647, 30481), (1793, 10999), (2771, 7117)]