21000455536

素因数分解:

$2^4\times {\mathrm{10979}}^1\times {\mathrm{119549}}^1$

素因数の和:130536

約数の個数: 20

約数和(自身を含む): 40692429000

約数和(自身を除く): 19691973464

約数列:

[1, 2, 4, 8, 16, 10979, 21958, 43916, 87832, 119549, 175664, 239098, 478196, 956392, 1912784, 1312528471, 2625056942, 5250113884, 10500227768, 21000455536]

約数ペア:

[(1, 21000455536), (2, 10500227768), (4, 5250113884), (8, 2625056942), (16, 1312528471), (10979, 1912784), (21958, 956392), (43916, 478196), (87832, 239098), (119549, 175664)]