20686486

素因数分解:

$2^1\times {\mathrm{31}}^2\times {\mathrm{47}}^1\times {\mathrm{229}}^1$

素因数の和:340

約数の個数: 24

約数和(自身を含む): 32888160

約数和(自身を除く): 12201674

約数列:

[1, 2, 31, 47, 62, 94, 229, 458, 961, 1457, 1922, 2914, 7099, 10763, 14198, 21526, 45167, 90334, 220069, 333653, 440138, 667306, 10343243, 20686486]

約数ペア:

[(1, 20686486), (2, 10343243), (31, 667306), (47, 440138), (62, 333653), (94, 220069), (229, 90334), (458, 45167), (961, 21526), (1457, 14198), (1922, 10763), (2914, 7099)]