21585784

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{307}}^1$

素因数の和:388

約数の個数: 64

約数和(自身を含む): 47900160

約数和(自身を除く): 26314376

約数列:

[1, 2, 4, 8, 11, 17, 22, 34, 44, 47, 68, 88, 94, 136, 187, 188, 307, 374, 376, 517, 614, 748, 799, 1034, 1228, 1496, 1598, 2068, 2456, 3196, 3377, 4136, 5219, 6392, 6754, 8789, 10438, 13508, 14429, 17578, 20876, 27016, 28858, 35156, 41752, 57409, 57716, 70312, 114818, 115432, 158719, 229636, 245293, 317438, 459272, 490586, 634876, 981172, 1269752, 1962344, 2698223, 5396446, 10792892, 21585784]

約数ペア:

[(1, 21585784), (2, 10792892), (4, 5396446), (8, 2698223), (11, 1962344), (17, 1269752), (22, 981172), (34, 634876), (44, 490586), (47, 459272), (68, 317438), (88, 245293), (94, 229636), (136, 158719), (187, 115432), (188, 114818), (307, 70312), (374, 57716), (376, 57409), (517, 41752), (614, 35156), (748, 28858), (799, 27016), (1034, 20876), (1228, 17578), (1496, 14429), (1598, 13508), (2068, 10438), (2456, 8789), (3196, 6754), (3377, 6392), (4136, 5219)]