20921571

素因数分解:

$3^6\times {\mathrm{11}}^1\times {\mathrm{2609}}^1$

素因数の和:2638

約数の個数: 28

約数和(自身を含む): 34232760

約数和(自身を除く): 13311189

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 243, 297, 729, 891, 2609, 2673, 7827, 8019, 23481, 28699, 70443, 86097, 211329, 258291, 633987, 774873, 1901961, 2324619, 6973857, 20921571]

約数ペア:

[(1, 20921571), (3, 6973857), (9, 2324619), (11, 1901961), (27, 774873), (33, 633987), (81, 258291), (99, 211329), (243, 86097), (297, 70443), (729, 28699), (891, 23481), (2609, 8019), (2673, 7827)]