20381880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{5479}}^1$

素因数の和:5524

約数の個数: 64

約数和(自身を含む): 63129600

約数和(自身を除く): 42747720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 93, 120, 124, 155, 186, 248, 310, 372, 465, 620, 744, 930, 1240, 1860, 3720, 5479, 10958, 16437, 21916, 27395, 32874, 43832, 54790, 65748, 82185, 109580, 131496, 164370, 169849, 219160, 328740, 339698, 509547, 657480, 679396, 849245, 1019094, 1358792, 1698490, 2038188, 2547735, 3396980, 4076376, 5095470, 6793960, 10190940, 20381880]

約数ペア:

[(1, 20381880), (2, 10190940), (3, 6793960), (4, 5095470), (5, 4076376), (6, 3396980), (8, 2547735), (10, 2038188), (12, 1698490), (15, 1358792), (20, 1019094), (24, 849245), (30, 679396), (31, 657480), (40, 509547), (60, 339698), (62, 328740), (93, 219160), (120, 169849), (124, 164370), (155, 131496), (186, 109580), (248, 82185), (310, 65748), (372, 54790), (465, 43832), (620, 32874), (744, 27395), (930, 21916), (1240, 16437), (1860, 10958), (3720, 5479)]