20399974

素因数分解:

$2^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{103}}^1$

素因数の和:209

約数の個数: 48

約数和(自身を含む): 37559808

約数和(自身を除く): 17159834

約数列:

[1, 2, 7, 14, 43, 47, 49, 86, 94, 98, 103, 206, 301, 329, 602, 658, 721, 1442, 2021, 2107, 2303, 4042, 4214, 4429, 4606, 4841, 5047, 8858, 9682, 10094, 14147, 28294, 31003, 33887, 62006, 67774, 99029, 198058, 208163, 217021, 237209, 416326, 434042, 474418, 1457141, 2914282, 10199987, 20399974]

約数ペア:

[(1, 20399974), (2, 10199987), (7, 2914282), (14, 1457141), (43, 474418), (47, 434042), (49, 416326), (86, 237209), (94, 217021), (98, 208163), (103, 198058), (206, 99029), (301, 67774), (329, 62006), (602, 33887), (658, 31003), (721, 28294), (1442, 14147), (2021, 10094), (2107, 9682), (2303, 8858), (4042, 5047), (4214, 4841), (4429, 4606)]