20940795

素因数分解:

$3^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{857}}^1$

素因数の和:1052

約数の個数: 32

約数和(自身を含む): 37477440

約数和(自身を除く): 16536645

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 181, 543, 857, 905, 1629, 2571, 2715, 4285, 4887, 7713, 8145, 12855, 23139, 24435, 38565, 115695, 155117, 465351, 775585, 1396053, 2326755, 4188159, 6980265, 20940795]

約数ペア:

[(1, 20940795), (3, 6980265), (5, 4188159), (9, 2326755), (15, 1396053), (27, 775585), (45, 465351), (135, 155117), (181, 115695), (543, 38565), (857, 24435), (905, 23139), (1629, 12855), (2571, 8145), (2715, 7713), (4285, 4887)]