1388792660

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{20809}}^1$

素因数の和:20936

約数の個数: 48

約数和(自身を含む): 3020613120

約数和(自身を除く): 1631820460

約数列:

[1, 2, 4, 5, 10, 20, 47, 71, 94, 142, 188, 235, 284, 355, 470, 710, 940, 1420, 3337, 6674, 13348, 16685, 20809, 33370, 41618, 66740, 83236, 104045, 208090, 416180, 978023, 1477439, 1956046, 2954878, 3912092, 4890115, 5909756, 7387195, 9780230, 14774390, 19560460, 29548780, 69439633, 138879266, 277758532, 347198165, 694396330, 1388792660]

約数ペア:

[(1, 1388792660), (2, 694396330), (4, 347198165), (5, 277758532), (10, 138879266), (20, 69439633), (47, 29548780), (71, 19560460), (94, 14774390), (142, 9780230), (188, 7387195), (235, 5909756), (284, 4890115), (355, 3912092), (470, 2954878), (710, 1956046), (940, 1477439), (1420, 978023), (3337, 416180), (6674, 208090), (13348, 104045), (16685, 83236), (20809, 66740), (33370, 41618)]