21436947

素因数分解:

$3^3\times 7^1\times {\mathrm{101}}^1\times {\mathrm{1123}}^1$

素因数の和:1240

約数の個数: 32

約数和(自身を含む): 36687360

約数和(自身を除く): 15250413

約数列:

[1, 3, 7, 9, 21, 27, 63, 101, 189, 303, 707, 909, 1123, 2121, 2727, 3369, 6363, 7861, 10107, 19089, 23583, 30321, 70749, 113423, 212247, 340269, 793961, 1020807, 2381883, 3062421, 7145649, 21436947]

約数ペア:

[(1, 21436947), (3, 7145649), (7, 3062421), (9, 2381883), (21, 1020807), (27, 793961), (63, 340269), (101, 212247), (189, 113423), (303, 70749), (707, 30321), (909, 23583), (1123, 19089), (2121, 10107), (2727, 7861), (3369, 6363)]