66881919

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1$

素因数の和:232

約数の個数: 48

約数和(自身を含む): 104353920

約数和(自身を除く): 37472001

約数列:

[1, 3, 13, 19, 39, 53, 57, 131, 159, 169, 247, 393, 507, 689, 741, 1007, 1703, 2067, 2489, 3021, 3211, 5109, 6943, 7467, 8957, 9633, 13091, 20829, 22139, 26871, 32357, 39273, 66417, 90259, 97071, 131917, 170183, 270777, 395751, 420641, 510549, 1173367, 1261923, 1714921, 3520101, 5144763, 22293973, 66881919]

約数ペア:

[(1, 66881919), (3, 22293973), (13, 5144763), (19, 3520101), (39, 1714921), (53, 1261923), (57, 1173367), (131, 510549), (159, 420641), (169, 395751), (247, 270777), (393, 170183), (507, 131917), (689, 97071), (741, 90259), (1007, 66417), (1703, 39273), (2067, 32357), (2489, 26871), (3021, 22139), (3211, 20829), (5109, 13091), (6943, 9633), (7467, 8957)]