19909740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{167}}^1\times {\mathrm{1987}}^1$

素因数の和:2166

約数の個数: 48

約数和(自身を含む): 56109312

約数和(自身を除く): 36199572

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 167, 334, 501, 668, 835, 1002, 1670, 1987, 2004, 2505, 3340, 3974, 5010, 5961, 7948, 9935, 10020, 11922, 19870, 23844, 29805, 39740, 59610, 119220, 331829, 663658, 995487, 1327316, 1659145, 1990974, 3318290, 3981948, 4977435, 6636580, 9954870, 19909740]

約数ペア:

[(1, 19909740), (2, 9954870), (3, 6636580), (4, 4977435), (5, 3981948), (6, 3318290), (10, 1990974), (12, 1659145), (15, 1327316), (20, 995487), (30, 663658), (60, 331829), (167, 119220), (334, 59610), (501, 39740), (668, 29805), (835, 23844), (1002, 19870), (1670, 11922), (1987, 10020), (2004, 9935), (2505, 7948), (3340, 5961), (3974, 5010)]