20651344

素因数分解:

$2^4\times 7^3\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:153

約数の個数: 80

約数和(自身を含む): 48211200

約数和(自身を除く): 27559856

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 53, 56, 71, 98, 106, 112, 142, 196, 212, 284, 343, 371, 392, 424, 497, 568, 686, 742, 784, 848, 994, 1136, 1372, 1484, 1988, 2597, 2744, 2968, 3479, 3763, 3976, 5194, 5488, 5936, 6958, 7526, 7952, 10388, 13916, 15052, 18179, 20776, 24353, 26341, 27832, 30104, 36358, 41552, 48706, 52682, 55664, 60208, 72716, 97412, 105364, 145432, 184387, 194824, 210728, 290864, 368774, 389648, 421456, 737548, 1290709, 1475096, 2581418, 2950192, 5162836, 10325672, 20651344]

約数ペア:

[(1, 20651344), (2, 10325672), (4, 5162836), (7, 2950192), (8, 2581418), (14, 1475096), (16, 1290709), (28, 737548), (49, 421456), (53, 389648), (56, 368774), (71, 290864), (98, 210728), (106, 194824), (112, 184387), (142, 145432), (196, 105364), (212, 97412), (284, 72716), (343, 60208), (371, 55664), (392, 52682), (424, 48706), (497, 41552), (568, 36358), (686, 30104), (742, 27832), (784, 26341), (848, 24353), (994, 20776), (1136, 18179), (1372, 15052), (1484, 13916), (1988, 10388), (2597, 7952), (2744, 7526), (2968, 6958), (3479, 5936), (3763, 5488), (3976, 5194)]