19397756

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{277}}^1$

素因数の和:390

約数の個数: 48

約数和(自身を含む): 40539072

約数和(自身を除く): 21141316

約数列:

[1, 2, 4, 7, 14, 28, 41, 61, 82, 122, 164, 244, 277, 287, 427, 554, 574, 854, 1108, 1148, 1708, 1939, 2501, 3878, 5002, 7756, 10004, 11357, 16897, 17507, 22714, 33794, 35014, 45428, 67588, 70028, 79499, 118279, 158998, 236558, 317996, 473116, 692777, 1385554, 2771108, 4849439, 9698878, 19397756]

約数ペア:

[(1, 19397756), (2, 9698878), (4, 4849439), (7, 2771108), (14, 1385554), (28, 692777), (41, 473116), (61, 317996), (82, 236558), (122, 158998), (164, 118279), (244, 79499), (277, 70028), (287, 67588), (427, 45428), (554, 35014), (574, 33794), (854, 22714), (1108, 17507), (1148, 16897), (1708, 11357), (1939, 10004), (2501, 7756), (3878, 5002)]