18695780

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{419}}^1$

素因数の和:548

約数の個数: 48

約数和(自身を含む): 41489280

約数和(自身を除く): 22793500

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 97, 115, 194, 230, 388, 419, 460, 485, 838, 970, 1676, 1940, 2095, 2231, 4190, 4462, 8380, 8924, 9637, 11155, 19274, 22310, 38548, 40643, 44620, 48185, 81286, 96370, 162572, 192740, 203215, 406430, 812860, 934789, 1869578, 3739156, 4673945, 9347890, 18695780]

約数ペア:

[(1, 18695780), (2, 9347890), (4, 4673945), (5, 3739156), (10, 1869578), (20, 934789), (23, 812860), (46, 406430), (92, 203215), (97, 192740), (115, 162572), (194, 96370), (230, 81286), (388, 48185), (419, 44620), (460, 40643), (485, 38548), (838, 22310), (970, 19274), (1676, 11155), (1940, 9637), (2095, 8924), (2231, 8380), (4190, 4462)]