128696253

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{7867}}^1$

素因数の和:7937

約数の個数: 32

約数和(自身を含む): 211491840

約数和(自身を除く): 82795587

約数列:

[1, 3, 7, 19, 21, 41, 57, 123, 133, 287, 399, 779, 861, 2337, 5453, 7867, 16359, 23601, 55069, 149473, 165207, 322547, 448419, 967641, 1046311, 2257829, 3138933, 6128393, 6773487, 18385179, 42898751, 128696253]

約数ペア:

[(1, 128696253), (3, 42898751), (7, 18385179), (19, 6773487), (21, 6128393), (41, 3138933), (57, 2257829), (123, 1046311), (133, 967641), (287, 448419), (399, 322547), (779, 165207), (861, 149473), (2337, 55069), (5453, 23601), (7867, 16359)]