21396452

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{547}}^1$

素因数の和:696

約数の個数: 48

約数和(自身を含む): 47136768

約数和(自身を除く): 25740316

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 127, 154, 254, 308, 508, 547, 889, 1094, 1397, 1778, 2188, 2794, 3556, 3829, 5588, 6017, 7658, 9779, 12034, 15316, 19558, 24068, 39116, 42119, 69469, 84238, 138938, 168476, 277876, 486283, 764159, 972566, 1528318, 1945132, 3056636, 5349113, 10698226, 21396452]

約数ペア:

[(1, 21396452), (2, 10698226), (4, 5349113), (7, 3056636), (11, 1945132), (14, 1528318), (22, 972566), (28, 764159), (44, 486283), (77, 277876), (127, 168476), (154, 138938), (254, 84238), (308, 69469), (508, 42119), (547, 39116), (889, 24068), (1094, 19558), (1397, 15316), (1778, 12034), (2188, 9779), (2794, 7658), (3556, 6017), (3829, 5588)]