20451470

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{2579}}^1$

素因数の和:2660

約数の個数: 32

約数和(自身を含む): 40309920

約数和(自身を除く): 19858450

約数列:

[1, 2, 5, 10, 13, 26, 61, 65, 122, 130, 305, 610, 793, 1586, 2579, 3965, 5158, 7930, 12895, 25790, 33527, 67054, 157319, 167635, 314638, 335270, 786595, 1573190, 2045147, 4090294, 10225735, 20451470]

約数ペア:

[(1, 20451470), (2, 10225735), (5, 4090294), (10, 2045147), (13, 1573190), (26, 786595), (61, 335270), (65, 314638), (122, 167635), (130, 157319), (305, 67054), (610, 33527), (793, 25790), (1586, 12895), (2579, 7930), (3965, 5158)]