209120877

素因数分解:

$3^2\times 7^2\times {\mathrm{474197}}^1$

素因数の和:474217

約数の個数: 18

約数和(自身を含む): 351380718

約数和(自身を除く): 142259841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 474197, 1422591, 3319379, 4267773, 9958137, 23235653, 29874411, 69706959, 209120877]

約数ペア:

[(1, 209120877), (3, 69706959), (7, 29874411), (9, 23235653), (21, 9958137), (49, 4267773), (63, 3319379), (147, 1422591), (441, 474197)]