21342568

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{1259}}^1$

素因数の和:1441

約数の個数: 32

約数和(自身を含む): 43394400

約数和(自身を除く): 22051832

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 163, 326, 652, 1259, 1304, 2119, 2518, 4238, 5036, 8476, 10072, 16367, 16952, 32734, 65468, 130936, 205217, 410434, 820868, 1641736, 2667821, 5335642, 10671284, 21342568]

約数ペア:

[(1, 21342568), (2, 10671284), (4, 5335642), (8, 2667821), (13, 1641736), (26, 820868), (52, 410434), (104, 205217), (163, 130936), (326, 65468), (652, 32734), (1259, 16952), (1304, 16367), (2119, 10072), (2518, 8476), (4238, 5036)]