21451869

素因数分解:

$3^2\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{569}}^1$

素因数の和:705

約数の個数: 24

約数和(自身を含む): 32011200

約数和(自身を除く): 10559331

約数列:

[1, 3, 9, 59, 71, 177, 213, 531, 569, 639, 1707, 4189, 5121, 12567, 33571, 37701, 40399, 100713, 121197, 302139, 363591, 2383541, 7150623, 21451869]

約数ペア:

[(1, 21451869), (3, 7150623), (9, 2383541), (59, 363591), (71, 302139), (177, 121197), (213, 100713), (531, 40399), (569, 37701), (639, 33571), (1707, 12567), (4189, 5121)]