21879284

素因数分解:

$2^2\times 7^3\times {\mathrm{37}}^1\times {\mathrm{431}}^1$

素因数の和:493

約数の個数: 48

約数和(自身を含む): 45964800

約数和(自身を除く): 24085516

約数列:

[1, 2, 4, 7, 14, 28, 37, 49, 74, 98, 148, 196, 259, 343, 431, 518, 686, 862, 1036, 1372, 1724, 1813, 3017, 3626, 6034, 7252, 12068, 12691, 15947, 21119, 25382, 31894, 42238, 50764, 63788, 84476, 111629, 147833, 223258, 295666, 446516, 591332, 781403, 1562806, 3125612, 5469821, 10939642, 21879284]

約数ペア:

[(1, 21879284), (2, 10939642), (4, 5469821), (7, 3125612), (14, 1562806), (28, 781403), (37, 591332), (49, 446516), (74, 295666), (98, 223258), (148, 147833), (196, 111629), (259, 84476), (343, 63788), (431, 50764), (518, 42238), (686, 31894), (862, 25382), (1036, 21119), (1372, 15947), (1724, 12691), (1813, 12068), (3017, 7252), (3626, 6034)]