20766405

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{991}}^1$

素因数の和:1137

約数の個数: 32

約数和(自身を含む): 36569088

約数和(自身を除く): 15802683

約数列:

[1, 3, 5, 11, 15, 33, 55, 127, 165, 381, 635, 991, 1397, 1905, 2973, 4191, 4955, 6985, 10901, 14865, 20955, 32703, 54505, 125857, 163515, 377571, 629285, 1384427, 1887855, 4153281, 6922135, 20766405]

約数ペア:

[(1, 20766405), (3, 6922135), (5, 4153281), (11, 1887855), (15, 1384427), (33, 629285), (55, 377571), (127, 163515), (165, 125857), (381, 54505), (635, 32703), (991, 20955), (1397, 14865), (1905, 10901), (2973, 6985), (4191, 4955)]