78216880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{709}}^1$

素因数の和:926

約数の個数: 80

約数和(自身を含む): 209183040

約数和(自身を除く): 130966160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 197, 280, 394, 560, 709, 788, 985, 1379, 1418, 1576, 1970, 2758, 2836, 3152, 3545, 3940, 4963, 5516, 5672, 6895, 7090, 7880, 9926, 11032, 11344, 13790, 14180, 15760, 19852, 22064, 24815, 27580, 28360, 39704, 49630, 55160, 56720, 79408, 99260, 110320, 139673, 198520, 279346, 397040, 558692, 698365, 977711, 1117384, 1396730, 1955422, 2234768, 2793460, 3910844, 4888555, 5586920, 7821688, 9777110, 11173840, 15643376, 19554220, 39108440, 78216880]

約数ペア:

[(1, 78216880), (2, 39108440), (4, 19554220), (5, 15643376), (7, 11173840), (8, 9777110), (10, 7821688), (14, 5586920), (16, 4888555), (20, 3910844), (28, 2793460), (35, 2234768), (40, 1955422), (56, 1396730), (70, 1117384), (80, 977711), (112, 698365), (140, 558692), (197, 397040), (280, 279346), (394, 198520), (560, 139673), (709, 110320), (788, 99260), (985, 79408), (1379, 56720), (1418, 55160), (1576, 49630), (1970, 39704), (2758, 28360), (2836, 27580), (3152, 24815), (3545, 22064), (3940, 19852), (4963, 15760), (5516, 14180), (5672, 13790), (6895, 11344), (7090, 11032), (7880, 9926)]