8107820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{1997}}^1$

素因数の和:2042

約数の個数: 48

約数和(自身を含む): 20139840

約数和(自身を除く): 12032020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 1997, 2030, 3994, 4060, 7988, 9985, 13979, 19970, 27958, 39940, 55916, 57913, 69895, 115826, 139790, 231652, 279580, 289565, 405391, 579130, 810782, 1158260, 1621564, 2026955, 4053910, 8107820]

約数ペア:

[(1, 8107820), (2, 4053910), (4, 2026955), (5, 1621564), (7, 1158260), (10, 810782), (14, 579130), (20, 405391), (28, 289565), (29, 279580), (35, 231652), (58, 139790), (70, 115826), (116, 69895), (140, 57913), (145, 55916), (203, 39940), (290, 27958), (406, 19970), (580, 13979), (812, 9985), (1015, 7988), (1997, 4060), (2030, 3994)]