21159215

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{54959}}^1$

素因数の和:54982

約数の個数: 16

約数和(自身を含む): 31656960

約数和(自身を除く): 10497745

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 54959, 274795, 384713, 604549, 1923565, 3022745, 4231843, 21159215]

約数ペア:

[(1, 21159215), (5, 4231843), (7, 3022745), (11, 1923565), (35, 604549), (55, 384713), (77, 274795), (385, 54959)]