28139804

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{433}}^1$

素因数の和:666

約数の個数: 48

約数和(自身を含む): 61829376

約数和(自身を除く): 33689572

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 211, 308, 422, 433, 844, 866, 1477, 1732, 2321, 2954, 3031, 4642, 4763, 5908, 6062, 9284, 9526, 12124, 16247, 19052, 32494, 33341, 64988, 66682, 91363, 133364, 182726, 365452, 639541, 1004993, 1279082, 2009986, 2558164, 4019972, 7034951, 14069902, 28139804]

約数ペア:

[(1, 28139804), (2, 14069902), (4, 7034951), (7, 4019972), (11, 2558164), (14, 2009986), (22, 1279082), (28, 1004993), (44, 639541), (77, 365452), (154, 182726), (211, 133364), (308, 91363), (422, 66682), (433, 64988), (844, 33341), (866, 32494), (1477, 19052), (1732, 16247), (2321, 12124), (2954, 9526), (3031, 9284), (4642, 6062), (4763, 5908)]