81506572

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{1889}}^1$

素因数の和:1990

約数の個数: 48

約数和(自身を含む): 172730880

約数和(自身を除く): 91224308

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 67, 92, 134, 161, 268, 322, 469, 644, 938, 1541, 1876, 1889, 3082, 3778, 6164, 7556, 10787, 13223, 21574, 26446, 43148, 43447, 52892, 86894, 126563, 173788, 253126, 304129, 506252, 608258, 885941, 1216516, 1771882, 2910949, 3543764, 5821898, 11643796, 20376643, 40753286, 81506572]

約数ペア:

[(1, 81506572), (2, 40753286), (4, 20376643), (7, 11643796), (14, 5821898), (23, 3543764), (28, 2910949), (46, 1771882), (67, 1216516), (92, 885941), (134, 608258), (161, 506252), (268, 304129), (322, 253126), (469, 173788), (644, 126563), (938, 86894), (1541, 52892), (1876, 43447), (1889, 43148), (3082, 26446), (3778, 21574), (6164, 13223), (7556, 10787)]