20185137

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{401}}^1$

素因数の和:478

約数の個数: 48

約数和(自身を含む): 36122112

約数和(自身を除く): 15936975

約数列:

[1, 3, 7, 9, 17, 21, 47, 51, 63, 119, 141, 153, 329, 357, 401, 423, 799, 987, 1071, 1203, 2397, 2807, 2961, 3609, 5593, 6817, 7191, 8421, 16779, 18847, 20451, 25263, 47719, 50337, 56541, 61353, 131929, 143157, 169623, 320399, 395787, 429471, 961197, 1187361, 2242793, 2883591, 6728379, 20185137]

約数ペア:

[(1, 20185137), (3, 6728379), (7, 2883591), (9, 2242793), (17, 1187361), (21, 961197), (47, 429471), (51, 395787), (63, 320399), (119, 169623), (141, 143157), (153, 131929), (329, 61353), (357, 56541), (401, 50337), (423, 47719), (799, 25263), (987, 20451), (1071, 18847), (1203, 16779), (2397, 8421), (2807, 7191), (2961, 6817), (3609, 5593)]