21185836

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{5689}}^1$

素因数の和:5726

約数の個数: 36

約数和(自身を含む): 45406200

約数和(自身を除く): 24220364

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 49, 76, 98, 133, 196, 266, 532, 931, 1862, 3724, 5689, 11378, 22756, 39823, 79646, 108091, 159292, 216182, 278761, 432364, 557522, 756637, 1115044, 1513274, 3026548, 5296459, 10592918, 21185836]

約数ペア:

[(1, 21185836), (2, 10592918), (4, 5296459), (7, 3026548), (14, 1513274), (19, 1115044), (28, 756637), (38, 557522), (49, 432364), (76, 278761), (98, 216182), (133, 159292), (196, 108091), (266, 79646), (532, 39823), (931, 22756), (1862, 11378), (3724, 5689)]