20145516

素因数分解:

$2^2\times 3^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{1553}}^1$

素因数の和:1630

約数の個数: 48

約数和(自身を含む): 50125824

約数和(自身を除く): 29980308

約数列:

[1, 2, 3, 4, 6, 12, 23, 46, 47, 69, 92, 94, 138, 141, 188, 276, 282, 564, 1081, 1553, 2162, 3106, 3243, 4324, 4659, 6212, 6486, 9318, 12972, 18636, 35719, 71438, 72991, 107157, 142876, 145982, 214314, 218973, 291964, 428628, 437946, 875892, 1678793, 3357586, 5036379, 6715172, 10072758, 20145516]

約数ペア:

[(1, 20145516), (2, 10072758), (3, 6715172), (4, 5036379), (6, 3357586), (12, 1678793), (23, 875892), (46, 437946), (47, 428628), (69, 291964), (92, 218973), (94, 214314), (138, 145982), (141, 142876), (188, 107157), (276, 72991), (282, 71438), (564, 35719), (1081, 18636), (1553, 12972), (2162, 9318), (3106, 6486), (3243, 6212), (4324, 4659)]