20819288

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1151}}^1$

素因数の和:1200

約数の個数: 64

約数和(自身を含む): 49766400

約数和(自身を除く): 28947112

約数列:

[1, 2, 4, 7, 8, 14, 17, 19, 28, 34, 38, 56, 68, 76, 119, 133, 136, 152, 238, 266, 323, 476, 532, 646, 952, 1064, 1151, 1292, 2261, 2302, 2584, 4522, 4604, 8057, 9044, 9208, 16114, 18088, 19567, 21869, 32228, 39134, 43738, 64456, 78268, 87476, 136969, 153083, 156536, 174952, 273938, 306166, 371773, 547876, 612332, 743546, 1095752, 1224664, 1487092, 2602411, 2974184, 5204822, 10409644, 20819288]

約数ペア:

[(1, 20819288), (2, 10409644), (4, 5204822), (7, 2974184), (8, 2602411), (14, 1487092), (17, 1224664), (19, 1095752), (28, 743546), (34, 612332), (38, 547876), (56, 371773), (68, 306166), (76, 273938), (119, 174952), (133, 156536), (136, 153083), (152, 136969), (238, 87476), (266, 78268), (323, 64456), (476, 43738), (532, 39134), (646, 32228), (952, 21869), (1064, 19567), (1151, 18088), (1292, 16114), (2261, 9208), (2302, 9044), (2584, 8057), (4522, 4604)]