20816316

素因数分解:

$2^2\times 3^2\times {\mathrm{29}}^1\times {\mathrm{127}}^1\times {\mathrm{157}}^1$

素因数の和:323

約数の個数: 72

約数和(自身を含む): 55211520

約数和(自身を除く): 34395204

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 29, 36, 58, 87, 116, 127, 157, 174, 254, 261, 314, 348, 381, 471, 508, 522, 628, 762, 942, 1044, 1143, 1413, 1524, 1884, 2286, 2826, 3683, 4553, 4572, 5652, 7366, 9106, 11049, 13659, 14732, 18212, 19939, 22098, 27318, 33147, 39878, 40977, 44196, 54636, 59817, 66294, 79756, 81954, 119634, 132588, 163908, 179451, 239268, 358902, 578231, 717804, 1156462, 1734693, 2312924, 3469386, 5204079, 6938772, 10408158, 20816316]

約数ペア:

[(1, 20816316), (2, 10408158), (3, 6938772), (4, 5204079), (6, 3469386), (9, 2312924), (12, 1734693), (18, 1156462), (29, 717804), (36, 578231), (58, 358902), (87, 239268), (116, 179451), (127, 163908), (157, 132588), (174, 119634), (254, 81954), (261, 79756), (314, 66294), (348, 59817), (381, 54636), (471, 44196), (508, 40977), (522, 39878), (628, 33147), (762, 27318), (942, 22098), (1044, 19939), (1143, 18212), (1413, 14732), (1524, 13659), (1884, 11049), (2286, 9106), (2826, 7366), (3683, 5652), (4553, 4572)]