21154084

素因数分解:

$2^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{2917}}^1$

素因数の和:2972

約数の個数: 36

約数和(自身を含む): 44242716

約数和(自身を除く): 23088632

約数列:

[1, 2, 4, 7, 14, 28, 37, 49, 74, 98, 148, 196, 259, 518, 1036, 1813, 2917, 3626, 5834, 7252, 11668, 20419, 40838, 81676, 107929, 142933, 215858, 285866, 431716, 571732, 755503, 1511006, 3022012, 5288521, 10577042, 21154084]

約数ペア:

[(1, 21154084), (2, 10577042), (4, 5288521), (7, 3022012), (14, 1511006), (28, 755503), (37, 571732), (49, 431716), (74, 285866), (98, 215858), (148, 142933), (196, 107929), (259, 81676), (518, 40838), (1036, 20419), (1813, 11668), (2917, 7252), (3626, 5834)]