20176983568

素因数分解:

$2^4\times 7^1\times {\mathrm{43}}^1\times {\mathrm{233}}^1\times {\mathrm{17981}}^1$

素因数の和:18272

約数の個数: 80

約数和(自身を含む): 45915382656

約数和(自身を除く): 25738399088

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 43, 56, 86, 112, 172, 233, 301, 344, 466, 602, 688, 932, 1204, 1631, 1864, 2408, 3262, 3728, 4816, 6524, 10019, 13048, 17981, 20038, 26096, 35962, 40076, 70133, 71924, 80152, 125867, 140266, 143848, 160304, 251734, 280532, 287696, 503468, 561064, 773183, 1006936, 1122128, 1546366, 2013872, 3092732, 4189573, 5412281, 6185464, 8379146, 10824562, 12370928, 16758292, 21649124, 29327011, 33516584, 43298248, 58654022, 67033168, 86596496, 117308044, 180151639, 234616088, 360303278, 469232176, 720606556, 1261061473, 1441213112, 2522122946, 2882426224, 5044245892, 10088491784, 20176983568]

約数ペア:

[(1, 20176983568), (2, 10088491784), (4, 5044245892), (7, 2882426224), (8, 2522122946), (14, 1441213112), (16, 1261061473), (28, 720606556), (43, 469232176), (56, 360303278), (86, 234616088), (112, 180151639), (172, 117308044), (233, 86596496), (301, 67033168), (344, 58654022), (466, 43298248), (602, 33516584), (688, 29327011), (932, 21649124), (1204, 16758292), (1631, 12370928), (1864, 10824562), (2408, 8379146), (3262, 6185464), (3728, 5412281), (4816, 4189573), (6524, 3092732), (10019, 2013872), (13048, 1546366), (17981, 1122128), (20038, 1006936), (26096, 773183), (35962, 561064), (40076, 503468), (70133, 287696), (71924, 280532), (80152, 251734), (125867, 160304), (140266, 143848)]