20924540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{11497}}^1$

素因数の和:11526

約数の個数: 48

約数和(自身を含む): 54086592

約数和(自身を除く): 33162052

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 11497, 22994, 45988, 57485, 80479, 114970, 149461, 160958, 229940, 298922, 321916, 402395, 597844, 747305, 804790, 1046227, 1494610, 1609580, 2092454, 2989220, 4184908, 5231135, 10462270, 20924540]

約数ペア:

[(1, 20924540), (2, 10462270), (4, 5231135), (5, 4184908), (7, 2989220), (10, 2092454), (13, 1609580), (14, 1494610), (20, 1046227), (26, 804790), (28, 747305), (35, 597844), (52, 402395), (65, 321916), (70, 298922), (91, 229940), (130, 160958), (140, 149461), (182, 114970), (260, 80479), (364, 57485), (455, 45988), (910, 22994), (1820, 11497)]