20533360

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1$

素因数の和:230

約数の個数: 80

約数和(自身を含む): 50282496

約数和(自身を除く): 29749136

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 47, 80, 86, 94, 127, 172, 188, 215, 235, 254, 344, 376, 430, 470, 508, 635, 688, 752, 860, 940, 1016, 1270, 1720, 1880, 2021, 2032, 2540, 3440, 3760, 4042, 5080, 5461, 5969, 8084, 10105, 10160, 10922, 11938, 16168, 20210, 21844, 23876, 27305, 29845, 32336, 40420, 43688, 47752, 54610, 59690, 80840, 87376, 95504, 109220, 119380, 161680, 218440, 238760, 256667, 436880, 477520, 513334, 1026668, 1283335, 2053336, 2566670, 4106672, 5133340, 10266680, 20533360]

約数ペア:

[(1, 20533360), (2, 10266680), (4, 5133340), (5, 4106672), (8, 2566670), (10, 2053336), (16, 1283335), (20, 1026668), (40, 513334), (43, 477520), (47, 436880), (80, 256667), (86, 238760), (94, 218440), (127, 161680), (172, 119380), (188, 109220), (215, 95504), (235, 87376), (254, 80840), (344, 59690), (376, 54610), (430, 47752), (470, 43688), (508, 40420), (635, 32336), (688, 29845), (752, 27305), (860, 23876), (940, 21844), (1016, 20210), (1270, 16168), (1720, 11938), (1880, 10922), (2021, 10160), (2032, 10105), (2540, 8084), (3440, 5969), (3760, 5461), (4042, 5080)]