21091406

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{2143}}^1$

素因数の和:2208

約数の個数: 32

約数和(自身を含む): 39106560

約数和(自身を除く): 18015154

約数列:

[1, 2, 7, 14, 19, 37, 38, 74, 133, 259, 266, 518, 703, 1406, 2143, 4286, 4921, 9842, 15001, 30002, 40717, 79291, 81434, 158582, 285019, 555037, 570038, 1110074, 1506529, 3013058, 10545703, 21091406]

約数ペア:

[(1, 21091406), (2, 10545703), (7, 3013058), (14, 1506529), (19, 1110074), (37, 570038), (38, 555037), (74, 285019), (133, 158582), (259, 81434), (266, 79291), (518, 40717), (703, 30002), (1406, 15001), (2143, 9842), (4286, 4921)]