81158080

素因数分解:

$2^6\times 5^1\times {\mathrm{127}}^1\times {\mathrm{1997}}^1$

素因数の和:2141

約数の個数: 56

約数和(自身を含む): 194876928

約数和(自身を除く): 113718848

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 160, 254, 320, 508, 635, 1016, 1270, 1997, 2032, 2540, 3994, 4064, 5080, 7988, 8128, 9985, 10160, 15976, 19970, 20320, 31952, 39940, 40640, 63904, 79880, 127808, 159760, 253619, 319520, 507238, 639040, 1014476, 1268095, 2028952, 2536190, 4057904, 5072380, 8115808, 10144760, 16231616, 20289520, 40579040, 81158080]

約数ペア:

[(1, 81158080), (2, 40579040), (4, 20289520), (5, 16231616), (8, 10144760), (10, 8115808), (16, 5072380), (20, 4057904), (32, 2536190), (40, 2028952), (64, 1268095), (80, 1014476), (127, 639040), (160, 507238), (254, 319520), (320, 253619), (508, 159760), (635, 127808), (1016, 79880), (1270, 63904), (1997, 40640), (2032, 39940), (2540, 31952), (3994, 20320), (4064, 19970), (5080, 15976), (7988, 10160), (8128, 9985)]