21218103670

素因数分解:

$2^1\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2129}}^1\times {\mathrm{5059}}^1$

素因数の和:7392

約数の個数: 32

約数和(自身を含む): 38412079200

約数和(自身を除く): 17193975530

約数列:

[1, 2, 5, 10, 197, 394, 985, 1970, 2129, 4258, 5059, 10118, 10645, 21290, 25295, 50590, 419413, 838826, 996623, 1993246, 2097065, 4194130, 4983115, 9966230, 10770611, 21541222, 53853055, 107706110, 2121810367, 4243620734, 10609051835, 21218103670]

約数ペア:

[(1, 21218103670), (2, 10609051835), (5, 4243620734), (10, 2121810367), (197, 107706110), (394, 53853055), (985, 21541222), (1970, 10770611), (2129, 9966230), (4258, 4983115), (5059, 4194130), (10118, 2097065), (10645, 1993246), (21290, 996623), (25295, 838826), (50590, 419413)]