21478701

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{3727}}^1$

素因数の和:3860

約数の個数: 16

約数和(自身を含む): 30599424

約数和(自身を除く): 9120723

約数列:

[1, 3, 17, 51, 113, 339, 1921, 3727, 5763, 11181, 63359, 190077, 421151, 1263453, 7159567, 21478701]

約数ペア:

[(1, 21478701), (3, 7159567), (17, 1263453), (51, 421151), (113, 190077), (339, 63359), (1921, 11181), (3727, 5763)]