20996878564

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{1212011}}^1$

素因数の和:1212147

約数の個数: 24

約数和(自身を含む): 37872950976

約数和(自身を除く): 16876072412

約数列:

[1, 2, 4, 61, 71, 122, 142, 244, 284, 4331, 8662, 17324, 1212011, 2424022, 4848044, 73932671, 86052781, 147865342, 172105562, 295730684, 344211124, 5249219641, 10498439282, 20996878564]

約数ペア:

[(1, 20996878564), (2, 10498439282), (4, 5249219641), (61, 344211124), (71, 295730684), (122, 172105562), (142, 147865342), (244, 86052781), (284, 73932671), (4331, 4848044), (8662, 2424022), (17324, 1212011)]