31380657

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:230

約数の個数: 64

約数和(自身を含む): 56567808

約数和(自身を除く): 25187151

約数列:

[1, 3, 7, 11, 17, 21, 33, 51, 61, 77, 119, 131, 183, 187, 231, 357, 393, 427, 561, 671, 917, 1037, 1281, 1309, 1441, 2013, 2227, 2751, 3111, 3927, 4323, 4697, 6681, 7259, 7991, 10087, 11407, 14091, 15589, 21777, 23973, 24497, 30261, 34221, 46767, 55937, 73491, 79849, 87901, 135847, 167811, 171479, 239547, 263703, 407541, 514437, 615307, 950929, 1494317, 1845921, 2852787, 4482951, 10460219, 31380657]

約数ペア:

[(1, 31380657), (3, 10460219), (7, 4482951), (11, 2852787), (17, 1845921), (21, 1494317), (33, 950929), (51, 615307), (61, 514437), (77, 407541), (119, 263703), (131, 239547), (183, 171479), (187, 167811), (231, 135847), (357, 87901), (393, 79849), (427, 73491), (561, 55937), (671, 46767), (917, 34221), (1037, 30261), (1281, 24497), (1309, 23973), (1441, 21777), (2013, 15589), (2227, 14091), (2751, 11407), (3111, 10087), (3927, 7991), (4323, 7259), (4697, 6681)]