21248156

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{3539}}^1$

素因数の和:3641

約数の個数: 24

約数和(自身を含む): 39648000

約数和(自身を除く): 18399844

約数列:

[1, 2, 4, 19, 38, 76, 79, 158, 316, 1501, 3002, 3539, 6004, 7078, 14156, 67241, 134482, 268964, 279581, 559162, 1118324, 5312039, 10624078, 21248156]

約数ペア:

[(1, 21248156), (2, 10624078), (4, 5312039), (19, 1118324), (38, 559162), (76, 279581), (79, 268964), (158, 134482), (316, 67241), (1501, 14156), (3002, 7078), (3539, 6004)]