12720988

素因数分解:

$2^2\times 7^2\times {\mathrm{41}}^1\times {\mathrm{1583}}^1$

素因数の和:1642

約数の個数: 36

約数和(自身を含む): 26544672

約数和(自身を除く): 13823684

約数列:

[1, 2, 4, 7, 14, 28, 41, 49, 82, 98, 164, 196, 287, 574, 1148, 1583, 2009, 3166, 4018, 6332, 8036, 11081, 22162, 44324, 64903, 77567, 129806, 155134, 259612, 310268, 454321, 908642, 1817284, 3180247, 6360494, 12720988]

約数ペア:

[(1, 12720988), (2, 6360494), (4, 3180247), (7, 1817284), (14, 908642), (28, 454321), (41, 310268), (49, 259612), (82, 155134), (98, 129806), (164, 77567), (196, 64903), (287, 44324), (574, 22162), (1148, 11081), (1583, 8036), (2009, 6332), (3166, 4018)]