81436660

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{5227}}^1$

素因数の和:5296

約数の個数: 48

約数和(自身を含む): 184443840

約数和(自身を除く): 103007180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 41, 76, 82, 95, 164, 190, 205, 380, 410, 779, 820, 1558, 3116, 3895, 5227, 7790, 10454, 15580, 20908, 26135, 52270, 99313, 104540, 198626, 214307, 397252, 428614, 496565, 857228, 993130, 1071535, 1986260, 2143070, 4071833, 4286140, 8143666, 16287332, 20359165, 40718330, 81436660]

約数ペア:

[(1, 81436660), (2, 40718330), (4, 20359165), (5, 16287332), (10, 8143666), (19, 4286140), (20, 4071833), (38, 2143070), (41, 1986260), (76, 1071535), (82, 993130), (95, 857228), (164, 496565), (190, 428614), (205, 397252), (380, 214307), (410, 198626), (779, 104540), (820, 99313), (1558, 52270), (3116, 26135), (3895, 20908), (5227, 15580), (7790, 10454)]