28317920

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{359}}^1$

素因数の和:420

約数の個数: 96

約数和(自身を含む): 73483200

約数和(自身を除く): 45165280

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, 272, 290, 340, 359, 464, 493, 544, 580, 680, 718, 928, 986, 1160, 1360, 1436, 1795, 1972, 2320, 2465, 2720, 2872, 3590, 3944, 4640, 4930, 5744, 6103, 7180, 7888, 9860, 10411, 11488, 12206, 14360, 15776, 19720, 20822, 24412, 28720, 30515, 39440, 41644, 48824, 52055, 57440, 61030, 78880, 83288, 97648, 104110, 122060, 166576, 176987, 195296, 208220, 244120, 333152, 353974, 416440, 488240, 707948, 832880, 884935, 976480, 1415896, 1665760, 1769870, 2831792, 3539740, 5663584, 7079480, 14158960, 28317920]

約数ペア:

[(1, 28317920), (2, 14158960), (4, 7079480), (5, 5663584), (8, 3539740), (10, 2831792), (16, 1769870), (17, 1665760), (20, 1415896), (29, 976480), (32, 884935), (34, 832880), (40, 707948), (58, 488240), (68, 416440), (80, 353974), (85, 333152), (116, 244120), (136, 208220), (145, 195296), (160, 176987), (170, 166576), (232, 122060), (272, 104110), (290, 97648), (340, 83288), (359, 78880), (464, 61030), (493, 57440), (544, 52055), (580, 48824), (680, 41644), (718, 39440), (928, 30515), (986, 28720), (1160, 24412), (1360, 20822), (1436, 19720), (1795, 15776), (1972, 14360), (2320, 12206), (2465, 11488), (2720, 10411), (2872, 9860), (3590, 7888), (3944, 7180), (4640, 6103), (4930, 5744)]