208020141

素因数分解:

$3^2\times 7^2\times {\mathrm{569}}^1\times {\mathrm{829}}^1$

素因数の和:1418

約数の個数: 36

約数和(自身を含む): 350567100

約数和(自身を除く): 142546959

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 569, 829, 1707, 2487, 3983, 5121, 5803, 7461, 11949, 17409, 27881, 35847, 40621, 52227, 83643, 121863, 250929, 365589, 471701, 1415103, 3301907, 4245309, 9905721, 23113349, 29717163, 69340047, 208020141]

約数ペア:

[(1, 208020141), (3, 69340047), (7, 29717163), (9, 23113349), (21, 9905721), (49, 4245309), (63, 3301907), (147, 1415103), (441, 471701), (569, 365589), (829, 250929), (1707, 121863), (2487, 83643), (3983, 52227), (5121, 40621), (5803, 35847), (7461, 27881), (11949, 17409)]