820175440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{20063}}^1$

素因数の和:20156

約数の個数: 80

約数和(自身を含む): 2209287168

約数和(自身を除く): 1389111728

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 73, 80, 112, 140, 146, 280, 292, 365, 511, 560, 584, 730, 1022, 1168, 1460, 2044, 2555, 2920, 4088, 5110, 5840, 8176, 10220, 20063, 20440, 40126, 40880, 80252, 100315, 140441, 160504, 200630, 280882, 321008, 401260, 561764, 702205, 802520, 1123528, 1404410, 1464599, 1605040, 2247056, 2808820, 2929198, 5617640, 5858396, 7322995, 10252193, 11235280, 11716792, 14645990, 20504386, 23433584, 29291980, 41008772, 51260965, 58583960, 82017544, 102521930, 117167920, 164035088, 205043860, 410087720, 820175440]

約数ペア:

[(1, 820175440), (2, 410087720), (4, 205043860), (5, 164035088), (7, 117167920), (8, 102521930), (10, 82017544), (14, 58583960), (16, 51260965), (20, 41008772), (28, 29291980), (35, 23433584), (40, 20504386), (56, 14645990), (70, 11716792), (73, 11235280), (80, 10252193), (112, 7322995), (140, 5858396), (146, 5617640), (280, 2929198), (292, 2808820), (365, 2247056), (511, 1605040), (560, 1464599), (584, 1404410), (730, 1123528), (1022, 802520), (1168, 702205), (1460, 561764), (2044, 401260), (2555, 321008), (2920, 280882), (4088, 200630), (5110, 160504), (5840, 140441), (8176, 100315), (10220, 80252), (20063, 40880), (20440, 40126)]