21160472

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{449}}^1$

素因数の和:635

約数の個数: 32

約数和(自身を含む): 40986000

約数和(自身を除く): 19825528

約数列:

[1, 2, 4, 8, 43, 86, 137, 172, 274, 344, 449, 548, 898, 1096, 1796, 3592, 5891, 11782, 19307, 23564, 38614, 47128, 61513, 77228, 123026, 154456, 246052, 492104, 2645059, 5290118, 10580236, 21160472]

約数ペア:

[(1, 21160472), (2, 10580236), (4, 5290118), (8, 2645059), (43, 492104), (86, 246052), (137, 154456), (172, 123026), (274, 77228), (344, 61513), (449, 47128), (548, 38614), (898, 23564), (1096, 19307), (1796, 11782), (3592, 5891)]