20415472

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{227}}^1$

素因数の和:326

約数の個数: 80

約数和(自身を含む): 50211072

約数和(自身を除く): 29795600

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 73, 77, 88, 112, 146, 154, 176, 227, 292, 308, 454, 511, 584, 616, 803, 908, 1022, 1168, 1232, 1589, 1606, 1816, 2044, 2497, 3178, 3212, 3632, 4088, 4994, 5621, 6356, 6424, 8176, 9988, 11242, 12712, 12848, 16571, 17479, 19976, 22484, 25424, 33142, 34958, 39952, 44968, 66284, 69916, 89936, 115997, 132568, 139832, 182281, 231994, 265136, 279664, 364562, 463988, 729124, 927976, 1275967, 1458248, 1855952, 2551934, 2916496, 5103868, 10207736, 20415472]

約数ペア:

[(1, 20415472), (2, 10207736), (4, 5103868), (7, 2916496), (8, 2551934), (11, 1855952), (14, 1458248), (16, 1275967), (22, 927976), (28, 729124), (44, 463988), (56, 364562), (73, 279664), (77, 265136), (88, 231994), (112, 182281), (146, 139832), (154, 132568), (176, 115997), (227, 89936), (292, 69916), (308, 66284), (454, 44968), (511, 39952), (584, 34958), (616, 33142), (803, 25424), (908, 22484), (1022, 19976), (1168, 17479), (1232, 16571), (1589, 12848), (1606, 12712), (1816, 11242), (2044, 9988), (2497, 8176), (3178, 6424), (3212, 6356), (3632, 5621), (4088, 4994)]