64981880

素因数分解:

$2^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{10903}}^1$

素因数の和:11063

約数の個数: 32

約数和(自身を含む): 147204000

約数和(自身を除く): 82222120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 149, 298, 596, 745, 1192, 1490, 2980, 5960, 10903, 21806, 43612, 54515, 87224, 109030, 218060, 436120, 1624547, 3249094, 6498188, 8122735, 12996376, 16245470, 32490940, 64981880]

約数ペア:

[(1, 64981880), (2, 32490940), (4, 16245470), (5, 12996376), (8, 8122735), (10, 6498188), (20, 3249094), (40, 1624547), (149, 436120), (298, 218060), (596, 109030), (745, 87224), (1192, 54515), (1490, 43612), (2980, 21806), (5960, 10903)]