20564516

素因数分解:

$2^2\times 7^2\times {\mathrm{239}}^1\times {\mathrm{439}}^1$

素因数の和:696

約数の個数: 36

約数和(自身を含む): 42134400

約数和(自身を除く): 21569884

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 239, 439, 478, 878, 956, 1673, 1756, 3073, 3346, 6146, 6692, 11711, 12292, 21511, 23422, 43022, 46844, 86044, 104921, 209842, 419684, 734447, 1468894, 2937788, 5141129, 10282258, 20564516]

約数ペア:

[(1, 20564516), (2, 10282258), (4, 5141129), (7, 2937788), (14, 1468894), (28, 734447), (49, 419684), (98, 209842), (196, 104921), (239, 86044), (439, 46844), (478, 43022), (878, 23422), (956, 21511), (1673, 12292), (1756, 11711), (3073, 6692), (3346, 6146)]