19987688

素因数分解:

$2^3\times 7^2\times {\mathrm{50989}}^1$

素因数の和:51009

約数の個数: 24

約数和(自身を含む): 43596450

約数和(自身を除く): 23608762

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 392, 50989, 101978, 203956, 356923, 407912, 713846, 1427692, 2498461, 2855384, 4996922, 9993844, 19987688]

約数ペア:

[(1, 19987688), (2, 9993844), (4, 4996922), (7, 2855384), (8, 2498461), (14, 1427692), (28, 713846), (49, 407912), (56, 356923), (98, 203956), (196, 101978), (392, 50989)]