15919981

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1$

素因数の和:201

約数の個数: 32

約数和(自身を含む): 20901888

約数和(自身を除く): 4981907

約数列:

[1, 7, 11, 47, 53, 77, 83, 329, 371, 517, 581, 583, 913, 2491, 3619, 3901, 4081, 4399, 6391, 17437, 27307, 27401, 30793, 42911, 48389, 191807, 206753, 300377, 338723, 1447271, 2274283, 15919981]

約数ペア:

[(1, 15919981), (7, 2274283), (11, 1447271), (47, 338723), (53, 300377), (77, 206753), (83, 191807), (329, 48389), (371, 42911), (517, 30793), (581, 27401), (583, 27307), (913, 17437), (2491, 6391), (3619, 4399), (3901, 4081)]