21860181

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{20411}}^1$

素因数の和:20441

約数の個数: 24

約数和(自身を含む): 38211264

約数和(自身を除く): 16351083

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 20411, 61233, 142877, 183699, 346987, 428631, 1040961, 1285893, 2428909, 3122883, 7286727, 21860181]

約数ペア:

[(1, 21860181), (3, 7286727), (7, 3122883), (9, 2428909), (17, 1285893), (21, 1040961), (51, 428631), (63, 346987), (119, 183699), (153, 142877), (357, 61233), (1071, 20411)]