28840100

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{353}}^1$

素因数の和:429

約数の個数: 72

約数和(自身を含む): 67599840

約数和(自身を除く): 38759740

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 43, 50, 76, 86, 95, 100, 172, 190, 215, 353, 380, 430, 475, 706, 817, 860, 950, 1075, 1412, 1634, 1765, 1900, 2150, 3268, 3530, 4085, 4300, 6707, 7060, 8170, 8825, 13414, 15179, 16340, 17650, 20425, 26828, 30358, 33535, 35300, 40850, 60716, 67070, 75895, 81700, 134140, 151790, 167675, 288401, 303580, 335350, 379475, 576802, 670700, 758950, 1153604, 1442005, 1517900, 2884010, 5768020, 7210025, 14420050, 28840100]

約数ペア:

[(1, 28840100), (2, 14420050), (4, 7210025), (5, 5768020), (10, 2884010), (19, 1517900), (20, 1442005), (25, 1153604), (38, 758950), (43, 670700), (50, 576802), (76, 379475), (86, 335350), (95, 303580), (100, 288401), (172, 167675), (190, 151790), (215, 134140), (353, 81700), (380, 75895), (430, 67070), (475, 60716), (706, 40850), (817, 35300), (860, 33535), (950, 30358), (1075, 26828), (1412, 20425), (1634, 17650), (1765, 16340), (1900, 15179), (2150, 13414), (3268, 8825), (3530, 8170), (4085, 7060), (4300, 6707)]