20742645

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17959}}^1$

素因数の和:17985

約数の個数: 32

約数和(自身を含む): 41379840

約数和(自身を除く): 20637195

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 165, 231, 385, 1155, 17959, 53877, 89795, 125713, 197549, 269385, 377139, 592647, 628565, 987745, 1382843, 1885695, 2963235, 4148529, 6914215, 20742645]

約数ペア:

[(1, 20742645), (3, 6914215), (5, 4148529), (7, 2963235), (11, 1885695), (15, 1382843), (21, 987745), (33, 628565), (35, 592647), (55, 377139), (77, 269385), (105, 197549), (165, 125713), (231, 89795), (385, 53877), (1155, 17959)]