21135284

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{4639}}^1$

素因数の和:4727

約数の個数: 24

約数和(自身を含む): 39755520

約数和(自身を除く): 18620236

約数列:

[1, 2, 4, 17, 34, 67, 68, 134, 268, 1139, 2278, 4556, 4639, 9278, 18556, 78863, 157726, 310813, 315452, 621626, 1243252, 5283821, 10567642, 21135284]

約数ペア:

[(1, 21135284), (2, 10567642), (4, 5283821), (17, 1243252), (34, 621626), (67, 315452), (68, 310813), (134, 157726), (268, 78863), (1139, 18556), (2278, 9278), (4556, 4639)]