21729813

素因数分解:

$3^1\times 7^1\times {\mathrm{233}}^1\times {\mathrm{4441}}^1$

素因数の和:4684

約数の個数: 16

約数和(自身を含む): 33261696

約数和(自身を除く): 11531883

約数列:

[1, 3, 7, 21, 233, 699, 1631, 4441, 4893, 13323, 31087, 93261, 1034753, 3104259, 7243271, 21729813]

約数ペア:

[(1, 21729813), (3, 7243271), (7, 3104259), (21, 1034753), (233, 93261), (699, 31087), (1631, 13323), (4441, 4893)]