1991231132

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{379}}^1\times {\mathrm{1231}}^1$

素因数の和:1722

約数の個数: 48

約数和(自身を含む): 3853893120

約数和(自身を除く): 1862661988

約数列:

[1, 2, 4, 11, 22, 44, 97, 194, 379, 388, 758, 1067, 1231, 1516, 2134, 2462, 4169, 4268, 4924, 8338, 13541, 16676, 27082, 36763, 54164, 73526, 119407, 147052, 238814, 404393, 466549, 477628, 808786, 933098, 1313477, 1617572, 1866196, 2626954, 5132039, 5253908, 10264078, 20528156, 45255253, 90510506, 181021012, 497807783, 995615566, 1991231132]

約数ペア:

[(1, 1991231132), (2, 995615566), (4, 497807783), (11, 181021012), (22, 90510506), (44, 45255253), (97, 20528156), (194, 10264078), (379, 5253908), (388, 5132039), (758, 2626954), (1067, 1866196), (1231, 1617572), (1516, 1313477), (2134, 933098), (2462, 808786), (4169, 477628), (4268, 466549), (4924, 404393), (8338, 238814), (13541, 147052), (16676, 119407), (27082, 73526), (36763, 54164)]