19918696

素因数分解:

$2^3\times 7^4\times {\mathrm{17}}^1\times {\mathrm{61}}^1$

素因数の和:112

約数の個数: 80

約数和(自身を含む): 46888740

約数和(自身を除く): 26970044

約数列:

[1, 2, 4, 7, 8, 14, 17, 28, 34, 49, 56, 61, 68, 98, 119, 122, 136, 196, 238, 244, 343, 392, 427, 476, 488, 686, 833, 854, 952, 1037, 1372, 1666, 1708, 2074, 2401, 2744, 2989, 3332, 3416, 4148, 4802, 5831, 5978, 6664, 7259, 8296, 9604, 11662, 11956, 14518, 19208, 20923, 23324, 23912, 29036, 40817, 41846, 46648, 50813, 58072, 81634, 83692, 101626, 146461, 163268, 167384, 203252, 292922, 326536, 355691, 406504, 585844, 711382, 1171688, 1422764, 2489837, 2845528, 4979674, 9959348, 19918696]

約数ペア:

[(1, 19918696), (2, 9959348), (4, 4979674), (7, 2845528), (8, 2489837), (14, 1422764), (17, 1171688), (28, 711382), (34, 585844), (49, 406504), (56, 355691), (61, 326536), (68, 292922), (98, 203252), (119, 167384), (122, 163268), (136, 146461), (196, 101626), (238, 83692), (244, 81634), (343, 58072), (392, 50813), (427, 46648), (476, 41846), (488, 40817), (686, 29036), (833, 23912), (854, 23324), (952, 20923), (1037, 19208), (1372, 14518), (1666, 11956), (1708, 11662), (2074, 9604), (2401, 8296), (2744, 7259), (2989, 6664), (3332, 5978), (3416, 5831), (4148, 4802)]