18140180

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{14869}}^1$

素因数の和:14939

約数の個数: 24

約数和(自身を含む): 38721480

約数和(自身を除く): 20581300

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 14869, 29738, 59476, 74345, 148690, 297380, 907009, 1814018, 3628036, 4535045, 9070090, 18140180]

約数ペア:

[(1, 18140180), (2, 9070090), (4, 4535045), (5, 3628036), (10, 1814018), (20, 907009), (61, 297380), (122, 148690), (244, 74345), (305, 59476), (610, 29738), (1220, 14869)]