21091476

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{977}}^1$

素因数の和:1248

約数の個数: 48

約数和(自身を含む): 56520576

約数和(自身を除く): 35429100

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 257, 514, 771, 977, 1028, 1542, 1799, 1954, 2931, 3084, 3598, 3908, 5397, 5862, 6839, 7196, 10794, 11724, 13678, 20517, 21588, 27356, 41034, 82068, 251089, 502178, 753267, 1004356, 1506534, 1757623, 3013068, 3515246, 5272869, 7030492, 10545738, 21091476]

約数ペア:

[(1, 21091476), (2, 10545738), (3, 7030492), (4, 5272869), (6, 3515246), (7, 3013068), (12, 1757623), (14, 1506534), (21, 1004356), (28, 753267), (42, 502178), (84, 251089), (257, 82068), (514, 41034), (771, 27356), (977, 21588), (1028, 20517), (1542, 13678), (1799, 11724), (1954, 10794), (2931, 7196), (3084, 6839), (3598, 5862), (3908, 5397)]