21301672

素因数分解:

$2^3\times 7^4\times {\mathrm{1109}}^1$

素因数の和:1143

約数の個数: 40

約数和(自身を含む): 46636650

約数和(自身を除く): 25334978

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 343, 392, 686, 1109, 1372, 2218, 2401, 2744, 4436, 4802, 7763, 8872, 9604, 15526, 19208, 31052, 54341, 62104, 108682, 217364, 380387, 434728, 760774, 1521548, 2662709, 3043096, 5325418, 10650836, 21301672]

約数ペア:

[(1, 21301672), (2, 10650836), (4, 5325418), (7, 3043096), (8, 2662709), (14, 1521548), (28, 760774), (49, 434728), (56, 380387), (98, 217364), (196, 108682), (343, 62104), (392, 54341), (686, 31052), (1109, 19208), (1372, 15526), (2218, 9604), (2401, 8872), (2744, 7763), (4436, 4802)]