21076460

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{25703}}^1$

素因数の和:25753

約数の個数: 24

約数和(自身を含む): 45341856

約数和(自身を除く): 24265396

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 25703, 51406, 102812, 128515, 257030, 514060, 1053823, 2107646, 4215292, 5269115, 10538230, 21076460]

約数ペア:

[(1, 21076460), (2, 10538230), (4, 5269115), (5, 4215292), (10, 2107646), (20, 1053823), (41, 514060), (82, 257030), (164, 128515), (205, 102812), (410, 51406), (820, 25703)]