18800516

素因数分解:

$2^2\times 7^3\times {\mathrm{71}}^1\times {\mathrm{193}}^1$

素因数の和:289

約数の個数: 48

約数和(自身を含む): 39110400

約数和(自身を除く): 20309884

約数列:

[1, 2, 4, 7, 14, 28, 49, 71, 98, 142, 193, 196, 284, 343, 386, 497, 686, 772, 994, 1351, 1372, 1988, 2702, 3479, 5404, 6958, 9457, 13703, 13916, 18914, 24353, 27406, 37828, 48706, 54812, 66199, 95921, 97412, 132398, 191842, 264796, 383684, 671447, 1342894, 2685788, 4700129, 9400258, 18800516]

約数ペア:

[(1, 18800516), (2, 9400258), (4, 4700129), (7, 2685788), (14, 1342894), (28, 671447), (49, 383684), (71, 264796), (98, 191842), (142, 132398), (193, 97412), (196, 95921), (284, 66199), (343, 54812), (386, 48706), (497, 37828), (686, 27406), (772, 24353), (994, 18914), (1351, 13916), (1372, 13703), (1988, 9457), (2702, 6958), (3479, 5404)]