81554060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{2957}}^1$

素因数の和:3170

約数の個数: 48

約数和(自身を含む): 196789824

約数和(自身を除く): 115235764

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 197, 394, 788, 985, 1379, 1970, 2758, 2957, 3940, 5516, 5914, 6895, 11828, 13790, 14785, 20699, 27580, 29570, 41398, 59140, 82796, 103495, 206990, 413980, 582529, 1165058, 2330116, 2912645, 4077703, 5825290, 8155406, 11650580, 16310812, 20388515, 40777030, 81554060]

約数ペア:

[(1, 81554060), (2, 40777030), (4, 20388515), (5, 16310812), (7, 11650580), (10, 8155406), (14, 5825290), (20, 4077703), (28, 2912645), (35, 2330116), (70, 1165058), (140, 582529), (197, 413980), (394, 206990), (788, 103495), (985, 82796), (1379, 59140), (1970, 41398), (2758, 29570), (2957, 27580), (3940, 20699), (5516, 14785), (5914, 13790), (6895, 11828)]