19937991

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{12611}}^1$

素因数の和:12662

約数の個数: 16

約数和(自身を含む): 29058048

約数和(自身を除く): 9120057

約数列:

[1, 3, 17, 31, 51, 93, 527, 1581, 12611, 37833, 214387, 390941, 643161, 1172823, 6645997, 19937991]

約数ペア:

[(1, 19937991), (3, 6645997), (17, 1172823), (31, 643161), (51, 390941), (93, 214387), (527, 37833), (1581, 12611)]