28006760

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{857}}^1$

素因数の和:930

約数の個数: 64

約数和(自身を含む): 67953600

約数和(自身を除く): 39946840

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 43, 76, 86, 95, 152, 172, 190, 215, 344, 380, 430, 760, 817, 857, 860, 1634, 1714, 1720, 3268, 3428, 4085, 4285, 6536, 6856, 8170, 8570, 16283, 16340, 17140, 32566, 32680, 34280, 36851, 65132, 73702, 81415, 130264, 147404, 162830, 184255, 294808, 325660, 368510, 651320, 700169, 737020, 1400338, 1474040, 2800676, 3500845, 5601352, 7001690, 14003380, 28006760]

約数ペア:

[(1, 28006760), (2, 14003380), (4, 7001690), (5, 5601352), (8, 3500845), (10, 2800676), (19, 1474040), (20, 1400338), (38, 737020), (40, 700169), (43, 651320), (76, 368510), (86, 325660), (95, 294808), (152, 184255), (172, 162830), (190, 147404), (215, 130264), (344, 81415), (380, 73702), (430, 65132), (760, 36851), (817, 34280), (857, 32680), (860, 32566), (1634, 17140), (1714, 16340), (1720, 16283), (3268, 8570), (3428, 8170), (4085, 6856), (4285, 6536)]