131575731

素因数分解:

$3^1\times 7^2\times {\mathrm{89}}^2\times {\mathrm{113}}^1$

素因数の和:308

約数の個数: 36

約数和(自身を含む): 208221912

約数和(自身を除く): 76646181

約数列:

[1, 3, 7, 21, 49, 89, 113, 147, 267, 339, 623, 791, 1869, 2373, 4361, 5537, 7921, 10057, 13083, 16611, 23763, 30171, 55447, 70399, 166341, 211197, 388129, 492793, 895073, 1164387, 1478379, 2685219, 6265511, 18796533, 43858577, 131575731]

約数ペア:

[(1, 131575731), (3, 43858577), (7, 18796533), (21, 6265511), (49, 2685219), (89, 1478379), (113, 1164387), (147, 895073), (267, 492793), (339, 388129), (623, 211197), (791, 166341), (1869, 70399), (2373, 55447), (4361, 30171), (5537, 23763), (7921, 16611), (10057, 13083)]