21342035

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1571}}^1$

素因数の和:1619

約数の個数: 32

約数和(自身を含む): 31691520

約数和(自身を除く): 10349485

約数列:

[1, 5, 11, 13, 19, 55, 65, 95, 143, 209, 247, 715, 1045, 1235, 1571, 2717, 7855, 13585, 17281, 20423, 29849, 86405, 102115, 149245, 224653, 328339, 388037, 1123265, 1641695, 1940185, 4268407, 21342035]

約数ペア:

[(1, 21342035), (5, 4268407), (11, 1940185), (13, 1641695), (19, 1123265), (55, 388037), (65, 328339), (95, 224653), (143, 149245), (209, 102115), (247, 86405), (715, 29849), (1045, 20423), (1235, 17281), (1571, 13585), (2717, 7855)]