31897481

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1$

素因数の和:162

約数の個数: 48

約数和(自身を含む): 44126208

約数和(自身を除く): 12228727

約数列:

[1, 7, 11, 23, 31, 49, 77, 83, 161, 217, 253, 341, 539, 581, 713, 913, 1127, 1519, 1771, 1909, 2387, 2573, 4067, 4991, 6391, 7843, 12397, 13363, 16709, 18011, 20999, 28303, 34937, 44737, 54901, 59179, 93541, 126077, 146993, 198121, 384307, 414253, 650969, 1028951, 1386847, 2899771, 4556783, 31897481]

約数ペア:

[(1, 31897481), (7, 4556783), (11, 2899771), (23, 1386847), (31, 1028951), (49, 650969), (77, 414253), (83, 384307), (161, 198121), (217, 146993), (253, 126077), (341, 93541), (539, 59179), (581, 54901), (713, 44737), (913, 34937), (1127, 28303), (1519, 20999), (1771, 18011), (1909, 16709), (2387, 13363), (2573, 12397), (4067, 7843), (4991, 6391)]