21909753

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{1609}}^1$

素因数の和:1721

約数の個数: 24

約数和(自身を含む): 33906600

約数和(自身を除く): 11996847

約数列:

[1, 3, 9, 17, 51, 89, 153, 267, 801, 1513, 1609, 4539, 4827, 13617, 14481, 27353, 82059, 143201, 246177, 429603, 1288809, 2434417, 7303251, 21909753]

約数ペア:

[(1, 21909753), (3, 7303251), (9, 2434417), (17, 1288809), (51, 429603), (89, 246177), (153, 143201), (267, 82059), (801, 27353), (1513, 14481), (1609, 13617), (4539, 4827)]