19017008

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{211}}^1$

素因数の和:393

約数の個数: 40

約数和(自身を含む): 38170176

約数和(自身を除く): 19153168

約数列:

[1, 2, 4, 8, 16, 43, 86, 131, 172, 211, 262, 344, 422, 524, 688, 844, 1048, 1688, 2096, 3376, 5633, 9073, 11266, 18146, 22532, 27641, 36292, 45064, 55282, 72584, 90128, 110564, 145168, 221128, 442256, 1188563, 2377126, 4754252, 9508504, 19017008]

約数ペア:

[(1, 19017008), (2, 9508504), (4, 4754252), (8, 2377126), (16, 1188563), (43, 442256), (86, 221128), (131, 145168), (172, 110564), (211, 90128), (262, 72584), (344, 55282), (422, 45064), (524, 36292), (688, 27641), (844, 22532), (1048, 18146), (1688, 11266), (2096, 9073), (3376, 5633)]