21000495

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{2099}}^1$

素因数の和:2159

約数の個数: 32

約数和(自身を含む): 36288000

約数和(自身を除く): 15287505

約数列:

[1, 3, 5, 15, 23, 29, 69, 87, 115, 145, 345, 435, 667, 2001, 2099, 3335, 6297, 10005, 10495, 31485, 48277, 60871, 144831, 182613, 241385, 304355, 724155, 913065, 1400033, 4200099, 7000165, 21000495]

約数ペア:

[(1, 21000495), (3, 7000165), (5, 4200099), (15, 1400033), (23, 913065), (29, 724155), (69, 304355), (87, 241385), (115, 182613), (145, 144831), (345, 60871), (435, 48277), (667, 31485), (2001, 10495), (2099, 10005), (3335, 6297)]