21840903

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{20393}}^1$

素因数の和:20423

約数の個数: 24

約数和(自身を含む): 38177568

約数和(自身を除く): 16336665

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 20393, 61179, 142751, 183537, 346681, 428253, 1040043, 1284759, 2426767, 3120129, 7280301, 21840903]

約数ペア:

[(1, 21840903), (3, 7280301), (7, 3120129), (9, 2426767), (17, 1284759), (21, 1040043), (51, 428253), (63, 346681), (119, 183537), (153, 142751), (357, 61179), (1071, 20393)]