21756728

素因数分解:

$2^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{13397}}^1$

素因数の和:13439

約数の個数: 32

約数和(自身を含む): 48232800

約数和(自身を除く): 26476072

約数列:

[1, 2, 4, 7, 8, 14, 28, 29, 56, 58, 116, 203, 232, 406, 812, 1624, 13397, 26794, 53588, 93779, 107176, 187558, 375116, 388513, 750232, 777026, 1554052, 2719591, 3108104, 5439182, 10878364, 21756728]

約数ペア:

[(1, 21756728), (2, 10878364), (4, 5439182), (7, 3108104), (8, 2719591), (14, 1554052), (28, 777026), (29, 750232), (56, 388513), (58, 375116), (116, 187558), (203, 107176), (232, 93779), (406, 53588), (812, 26794), (1624, 13397)]