1977741844

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{2083}}^1$

素因数の和:2181

約数の個数: 72

約数和(自身を含む): 4056047520

約数和(自身を除く): 2078305676

約数列:

[1, 2, 4, 13, 19, 26, 31, 38, 52, 62, 76, 124, 247, 403, 494, 589, 806, 961, 988, 1178, 1612, 1922, 2083, 2356, 3844, 4166, 7657, 8332, 12493, 15314, 18259, 24986, 27079, 30628, 36518, 39577, 49972, 54158, 64573, 73036, 79154, 108316, 129146, 158308, 237367, 258292, 474734, 514501, 839449, 949468, 1029002, 1226887, 1678898, 2001763, 2058004, 2453774, 3357796, 4003526, 4907548, 8007052, 15949531, 26022919, 31899062, 38033497, 52045838, 63798124, 76066994, 104091676, 152133988, 494435461, 988870922, 1977741844]

約数ペア:

[(1, 1977741844), (2, 988870922), (4, 494435461), (13, 152133988), (19, 104091676), (26, 76066994), (31, 63798124), (38, 52045838), (52, 38033497), (62, 31899062), (76, 26022919), (124, 15949531), (247, 8007052), (403, 4907548), (494, 4003526), (589, 3357796), (806, 2453774), (961, 2058004), (988, 2001763), (1178, 1678898), (1612, 1226887), (1922, 1029002), (2083, 949468), (2356, 839449), (3844, 514501), (4166, 474734), (7657, 258292), (8332, 237367), (12493, 158308), (15314, 129146), (18259, 108316), (24986, 79154), (27079, 73036), (30628, 64573), (36518, 54158), (39577, 49972)]