21031220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{150223}}^1$

素因数の和:150239

約数の個数: 24

約数和(自身を含む): 50475264

約数和(自身を除く): 29444044

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 150223, 300446, 600892, 751115, 1051561, 1502230, 2103122, 3004460, 4206244, 5257805, 10515610, 21031220]

約数ペア:

[(1, 21031220), (2, 10515610), (4, 5257805), (5, 4206244), (7, 3004460), (10, 2103122), (14, 1502230), (20, 1051561), (28, 751115), (35, 600892), (70, 300446), (140, 150223)]