2805220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{311}}^1$

素因数の和:372

約数の個数: 48

約数和(自身を含む): 6604416

約数和(自身を除く): 3799196

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 44, 55, 82, 110, 164, 205, 220, 311, 410, 451, 622, 820, 902, 1244, 1555, 1804, 2255, 3110, 3421, 4510, 6220, 6842, 9020, 12751, 13684, 17105, 25502, 34210, 51004, 63755, 68420, 127510, 140261, 255020, 280522, 561044, 701305, 1402610, 2805220]

約数ペア:

[(1, 2805220), (2, 1402610), (4, 701305), (5, 561044), (10, 280522), (11, 255020), (20, 140261), (22, 127510), (41, 68420), (44, 63755), (55, 51004), (82, 34210), (110, 25502), (164, 17105), (205, 13684), (220, 12751), (311, 9020), (410, 6842), (451, 6220), (622, 4510), (820, 3421), (902, 3110), (1244, 2255), (1555, 1804)]