20395000

素因数分解:

$2^3\times 5^4\times {\mathrm{4079}}^1$

素因数の和:4105

約数の個数: 40

約数和(自身を含む): 47797200

約数和(自身を除く): 27402200

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 2500, 4079, 5000, 8158, 16316, 20395, 32632, 40790, 81580, 101975, 163160, 203950, 407900, 509875, 815800, 1019750, 2039500, 2549375, 4079000, 5098750, 10197500, 20395000]

約数ペア:

[(1, 20395000), (2, 10197500), (4, 5098750), (5, 4079000), (8, 2549375), (10, 2039500), (20, 1019750), (25, 815800), (40, 509875), (50, 407900), (100, 203950), (125, 163160), (200, 101975), (250, 81580), (500, 40790), (625, 32632), (1000, 20395), (1250, 16316), (2500, 8158), (4079, 5000)]