20403285

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{4519}}^1$

素因数の和:4577

約数の個数: 32

約数和(自身を含む): 38184960

約数和(自身を除く): 17781675

約数列:

[1, 3, 5, 7, 15, 21, 35, 43, 105, 129, 215, 301, 645, 903, 1505, 4515, 4519, 13557, 22595, 31633, 67785, 94899, 158165, 194317, 474495, 582951, 971585, 1360219, 2914755, 4080657, 6801095, 20403285]

約数ペア:

[(1, 20403285), (3, 6801095), (5, 4080657), (7, 2914755), (15, 1360219), (21, 971585), (35, 582951), (43, 474495), (105, 194317), (129, 158165), (215, 94899), (301, 67785), (645, 31633), (903, 22595), (1505, 13557), (4515, 4519)]