20476988

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^2\times {\mathrm{761}}^1$

素因数の和:834

約数の個数: 36

約数和(自身を含む): 42373296

約数和(自身を除く): 21896308

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 434, 761, 868, 961, 1522, 1922, 3044, 3844, 5327, 6727, 10654, 13454, 21308, 23591, 26908, 47182, 94364, 165137, 330274, 660548, 731321, 1462642, 2925284, 5119247, 10238494, 20476988]

約数ペア:

[(1, 20476988), (2, 10238494), (4, 5119247), (7, 2925284), (14, 1462642), (28, 731321), (31, 660548), (62, 330274), (124, 165137), (217, 94364), (434, 47182), (761, 26908), (868, 23591), (961, 21308), (1522, 13454), (1922, 10654), (3044, 6727), (3844, 5327)]