20989736

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{90473}}^1$

素因数の和:90508

約数の個数: 16

約数和(自身を含む): 40713300

約数和(自身を除く): 19723564

約数列:

[1, 2, 4, 8, 29, 58, 116, 232, 90473, 180946, 361892, 723784, 2623717, 5247434, 10494868, 20989736]

約数ペア:

[(1, 20989736), (2, 10494868), (4, 5247434), (8, 2623717), (29, 723784), (58, 361892), (116, 180946), (232, 90473)]