25910000

素因数分解:

$2^4\times 5^4\times {\mathrm{2591}}^1$

素因数の和:2619

約数の個数: 50

約数和(自身を含む): 62754912

約数和(自身を除く): 36844912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 2000, 2500, 2591, 5000, 5182, 10000, 10364, 12955, 20728, 25910, 41456, 51820, 64775, 103640, 129550, 207280, 259100, 323875, 518200, 647750, 1036400, 1295500, 1619375, 2591000, 3238750, 5182000, 6477500, 12955000, 25910000]

約数ペア:

[(1, 25910000), (2, 12955000), (4, 6477500), (5, 5182000), (8, 3238750), (10, 2591000), (16, 1619375), (20, 1295500), (25, 1036400), (40, 647750), (50, 518200), (80, 323875), (100, 259100), (125, 207280), (200, 129550), (250, 103640), (400, 64775), (500, 51820), (625, 41456), (1000, 25910), (1250, 20728), (2000, 12955), (2500, 10364), (2591, 10000), (5000, 5182)]