19874921

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{4621}}^1$

素因数の和:4672

約数の個数: 16

約数和(自身を含む): 23960448

約数和(自身を除く): 4085527

約数列:

[1, 11, 17, 23, 187, 253, 391, 4301, 4621, 50831, 78557, 106283, 864127, 1169113, 1806811, 19874921]

約数ペア:

[(1, 19874921), (11, 1806811), (17, 1169113), (23, 864127), (187, 106283), (253, 78557), (391, 50831), (4301, 4621)]