21697976

素因数分解:

$2^3\times {\mathrm{109}}^1\times {\mathrm{149}}^1\times {\mathrm{167}}^1$

素因数の和:431

約数の個数: 32

約数和(自身を含む): 41580000

約数和(自身を除く): 19882024

約数列:

[1, 2, 4, 8, 109, 149, 167, 218, 298, 334, 436, 596, 668, 872, 1192, 1336, 16241, 18203, 24883, 32482, 36406, 49766, 64964, 72812, 99532, 129928, 145624, 199064, 2712247, 5424494, 10848988, 21697976]

約数ペア:

[(1, 21697976), (2, 10848988), (4, 5424494), (8, 2712247), (109, 199064), (149, 145624), (167, 129928), (218, 99532), (298, 72812), (334, 64964), (436, 49766), (596, 36406), (668, 32482), (872, 24883), (1192, 18203), (1336, 16241)]