18958856

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{163}}^1$

素因数の和:274

約数の個数: 64

約数和(自身を含む): 42823680

約数和(自身を除く): 23864824

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 56, 62, 67, 124, 134, 163, 217, 248, 268, 326, 434, 469, 536, 652, 868, 938, 1141, 1304, 1736, 1876, 2077, 2282, 3752, 4154, 4564, 5053, 8308, 9128, 10106, 10921, 14539, 16616, 20212, 21842, 29078, 35371, 40424, 43684, 58156, 70742, 76447, 87368, 116312, 141484, 152894, 282968, 305788, 338551, 611576, 677102, 1354204, 2369857, 2708408, 4739714, 9479428, 18958856]

約数ペア:

[(1, 18958856), (2, 9479428), (4, 4739714), (7, 2708408), (8, 2369857), (14, 1354204), (28, 677102), (31, 611576), (56, 338551), (62, 305788), (67, 282968), (124, 152894), (134, 141484), (163, 116312), (217, 87368), (248, 76447), (268, 70742), (326, 58156), (434, 43684), (469, 40424), (536, 35371), (652, 29078), (868, 21842), (938, 20212), (1141, 16616), (1304, 14539), (1736, 10921), (1876, 10106), (2077, 9128), (2282, 8308), (3752, 5053), (4154, 4564)]