21786562

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1\times {\mathrm{307}}^1$

素因数の和:490

約数の個数: 32

約数和(自身を含む): 38763648

約数和(自身を除く): 16977086

約数列:

[1, 2, 7, 14, 37, 74, 137, 259, 274, 307, 518, 614, 959, 1918, 2149, 4298, 5069, 10138, 11359, 22718, 35483, 42059, 70966, 79513, 84118, 159026, 294413, 588826, 1556183, 3112366, 10893281, 21786562]

約数ペア:

[(1, 21786562), (2, 10893281), (7, 3112366), (14, 1556183), (37, 588826), (74, 294413), (137, 159026), (259, 84118), (274, 79513), (307, 70966), (518, 42059), (614, 35483), (959, 22718), (1918, 11359), (2149, 10138), (4298, 5069)]