20158000

素因数分解:

$2^4\times 5^3\times {\mathrm{10079}}^1$

素因数の和:10102

約数の個数: 40

約数和(自身を含む): 48746880

約数和(自身を除く): 28588880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 10079, 20158, 40316, 50395, 80632, 100790, 161264, 201580, 251975, 403160, 503950, 806320, 1007900, 1259875, 2015800, 2519750, 4031600, 5039500, 10079000, 20158000]

約数ペア:

[(1, 20158000), (2, 10079000), (4, 5039500), (5, 4031600), (8, 2519750), (10, 2015800), (16, 1259875), (20, 1007900), (25, 806320), (40, 503950), (50, 403160), (80, 251975), (100, 201580), (125, 161264), (200, 100790), (250, 80632), (400, 50395), (500, 40316), (1000, 20158), (2000, 10079)]