19994742

素因数分解:

$2^1\times 3^3\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1$

素因数の和:242

約数の個数: 64

約数和(自身を含む): 46464000

約数和(自身を除く): 26469258

約数列:

[1, 2, 3, 6, 9, 18, 27, 43, 54, 79, 86, 109, 129, 158, 218, 237, 258, 327, 387, 474, 654, 711, 774, 981, 1161, 1422, 1962, 2133, 2322, 2943, 3397, 4266, 4687, 5886, 6794, 8611, 9374, 10191, 14061, 17222, 20382, 25833, 28122, 30573, 42183, 51666, 61146, 77499, 84366, 91719, 126549, 154998, 183438, 232497, 253098, 370273, 464994, 740546, 1110819, 2221638, 3332457, 6664914, 9997371, 19994742]

約数ペア:

[(1, 19994742), (2, 9997371), (3, 6664914), (6, 3332457), (9, 2221638), (18, 1110819), (27, 740546), (43, 464994), (54, 370273), (79, 253098), (86, 232497), (109, 183438), (129, 154998), (158, 126549), (218, 91719), (237, 84366), (258, 77499), (327, 61146), (387, 51666), (474, 42183), (654, 30573), (711, 28122), (774, 25833), (981, 20382), (1161, 17222), (1422, 14061), (1962, 10191), (2133, 9374), (2322, 8611), (2943, 6794), (3397, 5886), (4266, 4687)]