31220959

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{61}}^1$

素因数の和:136

約数の個数: 48

約数和(自身を含む): 43854336

約数和(自身を除く): 12633377

約数列:

[1, 7, 11, 17, 23, 61, 77, 119, 161, 187, 253, 289, 391, 427, 671, 1037, 1309, 1403, 1771, 2023, 2737, 3179, 4301, 4697, 6647, 7259, 9821, 11407, 15433, 17629, 22253, 23851, 30107, 46529, 73117, 79849, 108031, 123403, 166957, 193919, 262361, 405467, 511819, 1357433, 1836527, 2838269, 4460137, 31220959]

約数ペア:

[(1, 31220959), (7, 4460137), (11, 2838269), (17, 1836527), (23, 1357433), (61, 511819), (77, 405467), (119, 262361), (161, 193919), (187, 166957), (253, 123403), (289, 108031), (391, 79849), (427, 73117), (671, 46529), (1037, 30107), (1309, 23851), (1403, 22253), (1771, 17629), (2023, 15433), (2737, 11407), (3179, 9821), (4301, 7259), (4697, 6647)]