20651270

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{66617}}^1$

素因数の和:66655

約数の個数: 16

約数和(自身を含む): 38371968

約数和(自身を除く): 17720698

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 66617, 133234, 333085, 666170, 2065127, 4130254, 10325635, 20651270]

約数ペア:

[(1, 20651270), (2, 10325635), (5, 4130254), (10, 2065127), (31, 666170), (62, 333085), (155, 133234), (310, 66617)]