20981587

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1$

素因数の和:183

約数の個数: 32

約数和(自身を含む): 25894080

約数和(自身を除く): 4912493

約数列:

[1, 11, 17, 29, 53, 73, 187, 319, 493, 583, 803, 901, 1241, 1537, 2117, 3869, 5423, 9911, 13651, 16907, 23287, 26129, 35989, 42559, 65773, 112201, 287419, 395879, 723503, 1234211, 1907417, 20981587]

約数ペア:

[(1, 20981587), (11, 1907417), (17, 1234211), (29, 723503), (53, 395879), (73, 287419), (187, 112201), (319, 65773), (493, 42559), (583, 35989), (803, 26129), (901, 23287), (1241, 16907), (1537, 13651), (2117, 9911), (3869, 5423)]