3998942.00000000

素因数分解:

$2^3\times 5^1\times {\mathrm{179}}^1\times {\mathrm{3947}}^1$

素因数の和:4137

約数の個数: 32

約数和(自身を含む): 63957600

約数和(自身を除く): 35697080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 179, 358, 716, 895, 1432, 1790, 3580, 3947, 7160, 7894, 15788, 19735, 31576, 39470, 78940, 157880, 706513, 1413026, 2826052, 3532565, 5652104, 7065130, 14130260, 28260520]

約数ペア:

[(1, 28260520), (2, 14130260), (4, 7065130), (5, 5652104), (8, 3532565), (10, 2826052), (20, 1413026), (40, 706513), (179, 157880), (358, 78940), (716, 39470), (895, 31576), (1432, 19735), (1790, 15788), (3580, 7894), (3947, 7160)]