21989331

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{26849}}^1$

素因数の和:26875

約数の個数: 24

約数和(自身を含む): 39093600

約数和(自身を除く): 17104269

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 26849, 80547, 187943, 241641, 349037, 563829, 1047111, 1691487, 2443259, 3141333, 7329777, 21989331]

約数ペア:

[(1, 21989331), (3, 7329777), (7, 3141333), (9, 2443259), (13, 1691487), (21, 1047111), (39, 563829), (63, 349037), (91, 241641), (117, 187943), (273, 80547), (819, 26849)]