20187921585

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{661}}^1\times {\mathrm{156623}}^1$

素因数の和:157305

約数の個数: 32

約数和(自身を含む): 34838189568

約数和(自身を除く): 14650267983

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 661, 1983, 3305, 8593, 9915, 25779, 42965, 128895, 156623, 469869, 783115, 2036099, 2349345, 6108297, 10180495, 30541485, 103527803, 310583409, 517639015, 1345861439, 1552917045, 4037584317, 6729307195, 20187921585]

約数ペア:

[(1, 20187921585), (3, 6729307195), (5, 4037584317), (13, 1552917045), (15, 1345861439), (39, 517639015), (65, 310583409), (195, 103527803), (661, 30541485), (1983, 10180495), (3305, 6108297), (8593, 2349345), (9915, 2036099), (25779, 783115), (42965, 469869), (128895, 156623)]