20740085

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{463}}^1$

素因数の和:533

約数の個数: 24

約数和(自身を含む): 27350016

約数和(自身を除く): 6609931

約数列:

[1, 5, 17, 31, 85, 155, 289, 463, 527, 1445, 2315, 2635, 7871, 8959, 14353, 39355, 44795, 71765, 133807, 244001, 669035, 1220005, 4148017, 20740085]

約数ペア:

[(1, 20740085), (5, 4148017), (17, 1220005), (31, 669035), (85, 244001), (155, 133807), (289, 71765), (463, 44795), (527, 39355), (1445, 14353), (2315, 8959), (2635, 7871)]