28128560

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{7481}}^1$

素因数の和:7541

約数の個数: 40

約数和(自身を含む): 66799296

約数和(自身を除く): 38670736

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 7481, 14962, 29924, 37405, 59848, 74810, 119696, 149620, 299240, 351607, 598480, 703214, 1406428, 1758035, 2812856, 3516070, 5625712, 7032140, 14064280, 28128560]

約数ペア:

[(1, 28128560), (2, 14064280), (4, 7032140), (5, 5625712), (8, 3516070), (10, 2812856), (16, 1758035), (20, 1406428), (40, 703214), (47, 598480), (80, 351607), (94, 299240), (188, 149620), (235, 119696), (376, 74810), (470, 59848), (752, 37405), (940, 29924), (1880, 14962), (3760, 7481)]