19215

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{61}}^1$

素因数の和:79

約数の個数: 24

約数和(自身を含む): 38688

約数和(自身を除く): 19473

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 61, 63, 105, 183, 305, 315, 427, 549, 915, 1281, 2135, 2745, 3843, 6405, 19215]

約数ペア:

[(1, 19215), (3, 6405), (5, 3843), (7, 2745), (9, 2135), (15, 1281), (21, 915), (35, 549), (45, 427), (61, 315), (63, 305), (105, 183)]