20213872

素因数分解:

$2^4\times 7^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1$

素因数の和:123

約数の個数: 120

約数和(自身を含む): 50889600

約数和(自身を除く): 30675728

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 23, 28, 38, 46, 49, 56, 59, 76, 92, 98, 112, 118, 133, 152, 161, 184, 196, 236, 266, 304, 322, 368, 392, 413, 437, 472, 532, 644, 784, 826, 874, 931, 944, 1064, 1121, 1127, 1288, 1357, 1652, 1748, 1862, 2128, 2242, 2254, 2576, 2714, 2891, 3059, 3304, 3496, 3724, 4484, 4508, 5428, 5782, 6118, 6608, 6992, 7448, 7847, 8968, 9016, 9499, 10856, 11564, 12236, 14896, 15694, 17936, 18032, 18998, 21413, 21712, 23128, 24472, 25783, 31388, 37996, 42826, 46256, 48944, 51566, 54929, 62776, 66493, 75992, 85652, 103132, 109858, 125552, 132986, 151984, 171304, 180481, 206264, 219716, 265972, 342608, 360962, 412528, 439432, 531944, 721924, 878864, 1063888, 1263367, 1443848, 2526734, 2887696, 5053468, 10106936, 20213872]

約数ペア:

[(1, 20213872), (2, 10106936), (4, 5053468), (7, 2887696), (8, 2526734), (14, 1443848), (16, 1263367), (19, 1063888), (23, 878864), (28, 721924), (38, 531944), (46, 439432), (49, 412528), (56, 360962), (59, 342608), (76, 265972), (92, 219716), (98, 206264), (112, 180481), (118, 171304), (133, 151984), (152, 132986), (161, 125552), (184, 109858), (196, 103132), (236, 85652), (266, 75992), (304, 66493), (322, 62776), (368, 54929), (392, 51566), (413, 48944), (437, 46256), (472, 42826), (532, 37996), (644, 31388), (784, 25783), (826, 24472), (874, 23128), (931, 21712), (944, 21413), (1064, 18998), (1121, 18032), (1127, 17936), (1288, 15694), (1357, 14896), (1652, 12236), (1748, 11564), (1862, 10856), (2128, 9499), (2242, 9016), (2254, 8968), (2576, 7847), (2714, 7448), (2891, 6992), (3059, 6608), (3304, 6118), (3496, 5782), (3724, 5428), (4484, 4508)]