21335727

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{7639}}^1$

素因数の和:7675

約数の個数: 24

約数和(自身を含む): 34838400

約数和(自身を除く): 13502673

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 7639, 22917, 53473, 145141, 160419, 374311, 435423, 1015987, 1122933, 3047961, 7111909, 21335727]

約数ペア:

[(1, 21335727), (3, 7111909), (7, 3047961), (19, 1122933), (21, 1015987), (49, 435423), (57, 374311), (133, 160419), (147, 145141), (399, 53473), (931, 22917), (2793, 7639)]