20012320

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{227}}^1$

素因数の和:290

約数の個数: 96

約数和(自身を含む): 51710400

約数和(自身を除く): 31698080

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 29, 32, 38, 40, 58, 76, 80, 95, 116, 145, 152, 160, 190, 227, 232, 290, 304, 380, 454, 464, 551, 580, 608, 760, 908, 928, 1102, 1135, 1160, 1520, 1816, 2204, 2270, 2320, 2755, 3040, 3632, 4313, 4408, 4540, 4640, 5510, 6583, 7264, 8626, 8816, 9080, 11020, 13166, 17252, 17632, 18160, 21565, 22040, 26332, 32915, 34504, 36320, 43130, 44080, 52664, 65830, 69008, 86260, 88160, 105328, 125077, 131660, 138016, 172520, 210656, 250154, 263320, 345040, 500308, 526640, 625385, 690080, 1000616, 1053280, 1250770, 2001232, 2501540, 4002464, 5003080, 10006160, 20012320]

約数ペア:

[(1, 20012320), (2, 10006160), (4, 5003080), (5, 4002464), (8, 2501540), (10, 2001232), (16, 1250770), (19, 1053280), (20, 1000616), (29, 690080), (32, 625385), (38, 526640), (40, 500308), (58, 345040), (76, 263320), (80, 250154), (95, 210656), (116, 172520), (145, 138016), (152, 131660), (160, 125077), (190, 105328), (227, 88160), (232, 86260), (290, 69008), (304, 65830), (380, 52664), (454, 44080), (464, 43130), (551, 36320), (580, 34504), (608, 32915), (760, 26332), (908, 22040), (928, 21565), (1102, 18160), (1135, 17632), (1160, 17252), (1520, 13166), (1816, 11020), (2204, 9080), (2270, 8816), (2320, 8626), (2755, 7264), (3040, 6583), (3632, 5510), (4313, 4640), (4408, 4540)]