20975696

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{9857}}^1$

素因数の和:9891

約数の個数: 40

約数和(自身を含む): 48895680

約数和(自身を除く): 27919984

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 56, 76, 112, 133, 152, 266, 304, 532, 1064, 2128, 9857, 19714, 39428, 68999, 78856, 137998, 157712, 187283, 275996, 374566, 551992, 749132, 1103984, 1310981, 1498264, 2621962, 2996528, 5243924, 10487848, 20975696]

約数ペア:

[(1, 20975696), (2, 10487848), (4, 5243924), (7, 2996528), (8, 2621962), (14, 1498264), (16, 1310981), (19, 1103984), (28, 749132), (38, 551992), (56, 374566), (76, 275996), (112, 187283), (133, 157712), (152, 137998), (266, 78856), (304, 68999), (532, 39428), (1064, 19714), (2128, 9857)]