21508910

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{5501}}^1$

素因数の和:5548

約数の個数: 32

約数和(自身を含む): 42783552

約数和(自身を除く): 21274642

約数列:

[1, 2, 5, 10, 17, 23, 34, 46, 85, 115, 170, 230, 391, 782, 1955, 3910, 5501, 11002, 27505, 55010, 93517, 126523, 187034, 253046, 467585, 632615, 935170, 1265230, 2150891, 4301782, 10754455, 21508910]

約数ペア:

[(1, 21508910), (2, 10754455), (5, 4301782), (10, 2150891), (17, 1265230), (23, 935170), (34, 632615), (46, 467585), (85, 253046), (115, 187034), (170, 126523), (230, 93517), (391, 55010), (782, 27505), (1955, 11002), (3910, 5501)]