20715.0000000

素因数分解:

$2^2\times 3^2\times {\mathrm{59}}^1\times {\mathrm{2293}}^1$

素因数の和:2362

約数の個数: 36

約数和(自身を含む): 12525240

約数和(自身を除く): 7654908

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 59, 118, 177, 236, 354, 531, 708, 1062, 2124, 2293, 4586, 6879, 9172, 13758, 20637, 27516, 41274, 82548, 135287, 270574, 405861, 541148, 811722, 1217583, 1623444, 2435166, 4870332]

約数ペア:

[(1, 4870332), (2, 2435166), (3, 1623444), (4, 1217583), (6, 811722), (9, 541148), (12, 405861), (18, 270574), (36, 135287), (59, 82548), (118, 41274), (177, 27516), (236, 20637), (354, 13758), (531, 9172), (708, 6879), (1062, 4586), (2124, 2293)]