21821920

素因数分解:

$2^5\times 5^1\times {\mathrm{29}}^1\times {\mathrm{4703}}^1$

素因数の和:4747

約数の個数: 48

約数和(自身を含む): 53343360

約数和(自身を除く): 31521440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 80, 116, 145, 160, 232, 290, 464, 580, 928, 1160, 2320, 4640, 4703, 9406, 18812, 23515, 37624, 47030, 75248, 94060, 136387, 150496, 188120, 272774, 376240, 545548, 681935, 752480, 1091096, 1363870, 2182192, 2727740, 4364384, 5455480, 10910960, 21821920]

約数ペア:

[(1, 21821920), (2, 10910960), (4, 5455480), (5, 4364384), (8, 2727740), (10, 2182192), (16, 1363870), (20, 1091096), (29, 752480), (32, 681935), (40, 545548), (58, 376240), (80, 272774), (116, 188120), (145, 150496), (160, 136387), (232, 94060), (290, 75248), (464, 47030), (580, 37624), (928, 23515), (1160, 18812), (2320, 9406), (4640, 4703)]