20941160

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{113}}^2$

素因数の和:278

約数の個数: 48

約数和(自身を含む): 48697740

約数和(自身を除く): 27756580

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 113, 164, 205, 226, 328, 410, 452, 565, 820, 904, 1130, 1640, 2260, 4520, 4633, 9266, 12769, 18532, 23165, 25538, 37064, 46330, 51076, 63845, 92660, 102152, 127690, 185320, 255380, 510760, 523529, 1047058, 2094116, 2617645, 4188232, 5235290, 10470580, 20941160]

約数ペア:

[(1, 20941160), (2, 10470580), (4, 5235290), (5, 4188232), (8, 2617645), (10, 2094116), (20, 1047058), (40, 523529), (41, 510760), (82, 255380), (113, 185320), (164, 127690), (205, 102152), (226, 92660), (328, 63845), (410, 51076), (452, 46330), (565, 37064), (820, 25538), (904, 23165), (1130, 18532), (1640, 12769), (2260, 9266), (4520, 4633)]