31389904

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{21559}}^1$

素因数の和:21587

約数の個数: 40

約数和(自身を含む): 74856320

約数和(自身を除く): 43466416

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 21559, 43118, 86236, 150913, 172472, 280267, 301826, 344944, 560534, 603652, 1121068, 1207304, 1961869, 2242136, 2414608, 3923738, 4484272, 7847476, 15694952, 31389904]

約数ペア:

[(1, 31389904), (2, 15694952), (4, 7847476), (7, 4484272), (8, 3923738), (13, 2414608), (14, 2242136), (16, 1961869), (26, 1207304), (28, 1121068), (52, 603652), (56, 560534), (91, 344944), (104, 301826), (112, 280267), (182, 172472), (208, 150913), (364, 86236), (728, 43118), (1456, 21559)]