20406463

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{103}}^1$

素因数の和:235

約数の個数: 32

約数和(自身を含む): 26836992

約数和(自身を除く): 6430529

約数列:

[1, 7, 11, 31, 77, 83, 103, 217, 341, 581, 721, 913, 1133, 2387, 2573, 3193, 6391, 7931, 8549, 18011, 22351, 28303, 35123, 59843, 94039, 198121, 245861, 265019, 658273, 1855133, 2915209, 20406463]

約数ペア:

[(1, 20406463), (7, 2915209), (11, 1855133), (31, 658273), (77, 265019), (83, 245861), (103, 198121), (217, 94039), (341, 59843), (581, 35123), (721, 28303), (913, 22351), (1133, 18011), (2387, 8549), (2573, 7931), (3193, 6391)]