1279261040

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{397}}^1\times {\mathrm{857}}^1$

素因数の和:1314

約数の個数: 80

約数和(自身を含む): 3048769152

約数和(自身を除く): 1769508112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 397, 470, 752, 794, 857, 940, 1588, 1714, 1880, 1985, 3176, 3428, 3760, 3970, 4285, 6352, 6856, 7940, 8570, 13712, 15880, 17140, 18659, 31760, 34280, 37318, 40279, 68560, 74636, 80558, 93295, 149272, 161116, 186590, 201395, 298544, 322232, 340229, 373180, 402790, 644464, 680458, 746360, 805580, 1360916, 1492720, 1611160, 1701145, 2721832, 3222320, 3402290, 5443664, 6804580, 13609160, 15990763, 27218320, 31981526, 63963052, 79953815, 127926104, 159907630, 255852208, 319815260, 639630520, 1279261040]

約数ペア:

[(1, 1279261040), (2, 639630520), (4, 319815260), (5, 255852208), (8, 159907630), (10, 127926104), (16, 79953815), (20, 63963052), (40, 31981526), (47, 27218320), (80, 15990763), (94, 13609160), (188, 6804580), (235, 5443664), (376, 3402290), (397, 3222320), (470, 2721832), (752, 1701145), (794, 1611160), (857, 1492720), (940, 1360916), (1588, 805580), (1714, 746360), (1880, 680458), (1985, 644464), (3176, 402790), (3428, 373180), (3760, 340229), (3970, 322232), (4285, 298544), (6352, 201395), (6856, 186590), (7940, 161116), (8570, 149272), (13712, 93295), (15880, 80558), (17140, 74636), (18659, 68560), (31760, 40279), (34280, 37318)]