20856045

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{307}}^1\times {\mathrm{647}}^1$

素因数の和:969

約数の個数: 32

約数和(自身を含む): 38320128

約数和(自身を除く): 17464083

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 307, 647, 921, 1535, 1941, 2149, 3235, 4529, 4605, 6447, 9705, 10745, 13587, 22645, 32235, 67935, 198629, 595887, 993145, 1390403, 2979435, 4171209, 6952015, 20856045]

約数ペア:

[(1, 20856045), (3, 6952015), (5, 4171209), (7, 2979435), (15, 1390403), (21, 993145), (35, 595887), (105, 198629), (307, 67935), (647, 32235), (921, 22645), (1535, 13587), (1941, 10745), (2149, 9705), (3235, 6447), (4529, 4605)]