20540584

素因数分解:

$2^3\times {\mathrm{29}}^2\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:178

約数の個数: 48

約数和(自身を含む): 41389920

約数和(自身を除く): 20849336

約数列:

[1, 2, 4, 8, 29, 43, 58, 71, 86, 116, 142, 172, 232, 284, 344, 568, 841, 1247, 1682, 2059, 2494, 3053, 3364, 4118, 4988, 6106, 6728, 8236, 9976, 12212, 16472, 24424, 36163, 59711, 72326, 88537, 119422, 144652, 177074, 238844, 289304, 354148, 477688, 708296, 2567573, 5135146, 10270292, 20540584]

約数ペア:

[(1, 20540584), (2, 10270292), (4, 5135146), (8, 2567573), (29, 708296), (43, 477688), (58, 354148), (71, 289304), (86, 238844), (116, 177074), (142, 144652), (172, 119422), (232, 88537), (284, 72326), (344, 59711), (568, 36163), (841, 24424), (1247, 16472), (1682, 12212), (2059, 9976), (2494, 8236), (3053, 6728), (3364, 6106), (4118, 4988)]