20272160

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{257}}^1$

素因数の和:318

約数の個数: 96

約数和(自身を含む): 52662960

約数和(自身を除く): 32390800

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 29, 32, 34, 40, 58, 68, 80, 85, 116, 136, 145, 160, 170, 232, 257, 272, 290, 340, 464, 493, 514, 544, 580, 680, 928, 986, 1028, 1160, 1285, 1360, 1972, 2056, 2320, 2465, 2570, 2720, 3944, 4112, 4369, 4640, 4930, 5140, 7453, 7888, 8224, 8738, 9860, 10280, 14906, 15776, 17476, 19720, 20560, 21845, 29812, 34952, 37265, 39440, 41120, 43690, 59624, 69904, 74530, 78880, 87380, 119248, 126701, 139808, 149060, 174760, 238496, 253402, 298120, 349520, 506804, 596240, 633505, 699040, 1013608, 1192480, 1267010, 2027216, 2534020, 4054432, 5068040, 10136080, 20272160]

約数ペア:

[(1, 20272160), (2, 10136080), (4, 5068040), (5, 4054432), (8, 2534020), (10, 2027216), (16, 1267010), (17, 1192480), (20, 1013608), (29, 699040), (32, 633505), (34, 596240), (40, 506804), (58, 349520), (68, 298120), (80, 253402), (85, 238496), (116, 174760), (136, 149060), (145, 139808), (160, 126701), (170, 119248), (232, 87380), (257, 78880), (272, 74530), (290, 69904), (340, 59624), (464, 43690), (493, 41120), (514, 39440), (544, 37265), (580, 34952), (680, 29812), (928, 21845), (986, 20560), (1028, 19720), (1160, 17476), (1285, 15776), (1360, 14906), (1972, 10280), (2056, 9860), (2320, 8738), (2465, 8224), (2570, 7888), (2720, 7453), (3944, 5140), (4112, 4930), (4369, 4640)]