21338696

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{971}}^1$

素因数の和:1085

約数の個数: 32

約数和(自身を含む): 41640480

約数和(自身を除く): 20301784

約数列:

[1, 2, 4, 8, 41, 67, 82, 134, 164, 268, 328, 536, 971, 1942, 2747, 3884, 5494, 7768, 10988, 21976, 39811, 65057, 79622, 130114, 159244, 260228, 318488, 520456, 2667337, 5334674, 10669348, 21338696]

約数ペア:

[(1, 21338696), (2, 10669348), (4, 5334674), (8, 2667337), (41, 520456), (67, 318488), (82, 260228), (134, 159244), (164, 130114), (268, 79622), (328, 65057), (536, 39811), (971, 21976), (1942, 10988), (2747, 7768), (3884, 5494)]