19970216

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{137}}^2$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 45376800

約数和(自身を除く): 25406584

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 133, 137, 152, 266, 274, 532, 548, 959, 1064, 1096, 1918, 2603, 3836, 5206, 7672, 10412, 18221, 18769, 20824, 36442, 37538, 72884, 75076, 131383, 145768, 150152, 262766, 356611, 525532, 713222, 1051064, 1426444, 2496277, 2852888, 4992554, 9985108, 19970216]

約数ペア:

[(1, 19970216), (2, 9985108), (4, 4992554), (7, 2852888), (8, 2496277), (14, 1426444), (19, 1051064), (28, 713222), (38, 525532), (56, 356611), (76, 262766), (133, 150152), (137, 145768), (152, 131383), (266, 75076), (274, 72884), (532, 37538), (548, 36442), (959, 20824), (1064, 18769), (1096, 18221), (1918, 10412), (2603, 7672), (3836, 5206)]