19906848

素因数分解:

$2^5\times 3^2\times {\mathrm{13}}^2\times {\mathrm{409}}^1$

素因数の和:451

約数の個数: 108

約数和(自身を含む): 61449570

約数和(自身を除く): 41542722

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 32, 36, 39, 48, 52, 72, 78, 96, 104, 117, 144, 156, 169, 208, 234, 288, 312, 338, 409, 416, 468, 507, 624, 676, 818, 936, 1014, 1227, 1248, 1352, 1521, 1636, 1872, 2028, 2454, 2704, 3042, 3272, 3681, 3744, 4056, 4908, 5317, 5408, 6084, 6544, 7362, 8112, 9816, 10634, 12168, 13088, 14724, 15951, 16224, 19632, 21268, 24336, 29448, 31902, 39264, 42536, 47853, 48672, 58896, 63804, 69121, 85072, 95706, 117792, 127608, 138242, 170144, 191412, 207363, 255216, 276484, 382824, 414726, 510432, 552968, 622089, 765648, 829452, 1105936, 1244178, 1531296, 1658904, 2211872, 2488356, 3317808, 4976712, 6635616, 9953424, 19906848]

約数ペア:

[(1, 19906848), (2, 9953424), (3, 6635616), (4, 4976712), (6, 3317808), (8, 2488356), (9, 2211872), (12, 1658904), (13, 1531296), (16, 1244178), (18, 1105936), (24, 829452), (26, 765648), (32, 622089), (36, 552968), (39, 510432), (48, 414726), (52, 382824), (72, 276484), (78, 255216), (96, 207363), (104, 191412), (117, 170144), (144, 138242), (156, 127608), (169, 117792), (208, 95706), (234, 85072), (288, 69121), (312, 63804), (338, 58896), (409, 48672), (416, 47853), (468, 42536), (507, 39264), (624, 31902), (676, 29448), (818, 24336), (936, 21268), (1014, 19632), (1227, 16224), (1248, 15951), (1352, 14724), (1521, 13088), (1636, 12168), (1872, 10634), (2028, 9816), (2454, 8112), (2704, 7362), (3042, 6544), (3272, 6084), (3681, 5408), (3744, 5317), (4056, 4908)]