19945107

素因数分解:

$3^2\times 7^4\times {\mathrm{13}}^1\times {\mathrm{71}}^1$

素因数の和:118

約数の個数: 60

約数和(自身を含む): 36704304

約数和(自身を除く): 16759197

約数列:

[1, 3, 7, 9, 13, 21, 39, 49, 63, 71, 91, 117, 147, 213, 273, 343, 441, 497, 637, 639, 819, 923, 1029, 1491, 1911, 2401, 2769, 3087, 3479, 4459, 4473, 5733, 6461, 7203, 8307, 10437, 13377, 19383, 21609, 24353, 31213, 31311, 40131, 45227, 58149, 73059, 93639, 135681, 170471, 219177, 280917, 316589, 407043, 511413, 949767, 1534239, 2216123, 2849301, 6648369, 19945107]

約数ペア:

[(1, 19945107), (3, 6648369), (7, 2849301), (9, 2216123), (13, 1534239), (21, 949767), (39, 511413), (49, 407043), (63, 316589), (71, 280917), (91, 219177), (117, 170471), (147, 135681), (213, 93639), (273, 73059), (343, 58149), (441, 45227), (497, 40131), (637, 31311), (639, 31213), (819, 24353), (923, 21609), (1029, 19383), (1491, 13377), (1911, 10437), (2401, 8307), (2769, 7203), (3087, 6461), (3479, 5733), (4459, 4473)]