21529244

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{67}}^2\times {\mathrm{109}}^1$

素因数の和:258

約数の個数: 36

約数和(自身を含む): 42106680

約数和(自身を除く): 20577436

約数列:

[1, 2, 4, 11, 22, 44, 67, 109, 134, 218, 268, 436, 737, 1199, 1474, 2398, 2948, 4489, 4796, 7303, 8978, 14606, 17956, 29212, 49379, 80333, 98758, 160666, 197516, 321332, 489301, 978602, 1957204, 5382311, 10764622, 21529244]

約数ペア:

[(1, 21529244), (2, 10764622), (4, 5382311), (11, 1957204), (22, 978602), (44, 489301), (67, 321332), (109, 197516), (134, 160666), (218, 98758), (268, 80333), (436, 49379), (737, 29212), (1199, 17956), (1474, 14606), (2398, 8978), (2948, 7303), (4489, 4796)]