12772720

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1$

素因数の和:182

約数の個数: 80

約数和(自身を含む): 31426560

約数和(自身を除く): 18653840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 47, 79, 80, 86, 94, 158, 172, 188, 215, 235, 316, 344, 376, 395, 430, 470, 632, 688, 752, 790, 860, 940, 1264, 1580, 1720, 1880, 2021, 3160, 3397, 3440, 3713, 3760, 4042, 6320, 6794, 7426, 8084, 10105, 13588, 14852, 16168, 16985, 18565, 20210, 27176, 29704, 32336, 33970, 37130, 40420, 54352, 59408, 67940, 74260, 80840, 135880, 148520, 159659, 161680, 271760, 297040, 319318, 638636, 798295, 1277272, 1596590, 2554544, 3193180, 6386360, 12772720]

約数ペア:

[(1, 12772720), (2, 6386360), (4, 3193180), (5, 2554544), (8, 1596590), (10, 1277272), (16, 798295), (20, 638636), (40, 319318), (43, 297040), (47, 271760), (79, 161680), (80, 159659), (86, 148520), (94, 135880), (158, 80840), (172, 74260), (188, 67940), (215, 59408), (235, 54352), (316, 40420), (344, 37130), (376, 33970), (395, 32336), (430, 29704), (470, 27176), (632, 20210), (688, 18565), (752, 16985), (790, 16168), (860, 14852), (940, 13588), (1264, 10105), (1580, 8084), (1720, 7426), (1880, 6794), (2021, 6320), (3160, 4042), (3397, 3760), (3440, 3713)]