21284312

素因数分解:

$2^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{8839}}^1$

素因数の和:8895

約数の個数: 32

約数和(自身を含む): 46675200

約数和(自身を除く): 25390888

約数列:

[1, 2, 4, 7, 8, 14, 28, 43, 56, 86, 172, 301, 344, 602, 1204, 2408, 8839, 17678, 35356, 61873, 70712, 123746, 247492, 380077, 494984, 760154, 1520308, 2660539, 3040616, 5321078, 10642156, 21284312]

約数ペア:

[(1, 21284312), (2, 10642156), (4, 5321078), (7, 3040616), (8, 2660539), (14, 1520308), (28, 760154), (43, 494984), (56, 380077), (86, 247492), (172, 123746), (301, 70712), (344, 61873), (602, 35356), (1204, 17678), (2408, 8839)]