28009190

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{2861}}^1$

素因数の和:2968

約数の個数: 32

約数和(自身を含む): 55637280

約数和(自身を除く): 27628090

約数列:

[1, 2, 5, 10, 11, 22, 55, 89, 110, 178, 445, 890, 979, 1958, 2861, 4895, 5722, 9790, 14305, 28610, 31471, 62942, 157355, 254629, 314710, 509258, 1273145, 2546290, 2800919, 5601838, 14004595, 28009190]

約数ペア:

[(1, 28009190), (2, 14004595), (5, 5601838), (10, 2800919), (11, 2546290), (22, 1273145), (55, 509258), (89, 314710), (110, 254629), (178, 157355), (445, 62942), (890, 31471), (979, 28610), (1958, 14305), (2861, 9790), (4895, 5722)]