20073991

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{3923}}^1$

素因数の和:3990

約数の個数: 16

約数和(自身を含む): 24862464

約数和(自身を除く): 4788473

約数列:

[1, 7, 17, 43, 119, 301, 731, 3923, 5117, 27461, 66691, 168689, 466837, 1180823, 2867713, 20073991]

約数ペア:

[(1, 20073991), (7, 2867713), (17, 1180823), (43, 466837), (119, 168689), (301, 66691), (731, 27461), (3923, 5117)]