19856144

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{227}}^1$

素因数の和:324

約数の個数: 80

約数和(自身を含む): 48854016

約数和(自身を除く): 28997872

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 71, 77, 88, 112, 142, 154, 176, 227, 284, 308, 454, 497, 568, 616, 781, 908, 994, 1136, 1232, 1562, 1589, 1816, 1988, 2497, 3124, 3178, 3632, 3976, 4994, 5467, 6248, 6356, 7952, 9988, 10934, 12496, 12712, 16117, 17479, 19976, 21868, 25424, 32234, 34958, 39952, 43736, 64468, 69916, 87472, 112819, 128936, 139832, 177287, 225638, 257872, 279664, 354574, 451276, 709148, 902552, 1241009, 1418296, 1805104, 2482018, 2836592, 4964036, 9928072, 19856144]

約数ペア:

[(1, 19856144), (2, 9928072), (4, 4964036), (7, 2836592), (8, 2482018), (11, 1805104), (14, 1418296), (16, 1241009), (22, 902552), (28, 709148), (44, 451276), (56, 354574), (71, 279664), (77, 257872), (88, 225638), (112, 177287), (142, 139832), (154, 128936), (176, 112819), (227, 87472), (284, 69916), (308, 64468), (454, 43736), (497, 39952), (568, 34958), (616, 32234), (781, 25424), (908, 21868), (994, 19976), (1136, 17479), (1232, 16117), (1562, 12712), (1589, 12496), (1816, 10934), (1988, 9988), (2497, 7952), (3124, 6356), (3178, 6248), (3632, 5467), (3976, 4994)]