25390000

素因数分解:

$2^4\times 5^4\times {\mathrm{2539}}^1$

素因数の和:2567

約数の個数: 50

約数和(自身を含む): 61495940

約数和(自身を除く): 36105940

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, 2539, 5000, 5078, 10000, 10156, 12695, 20312, 25390, 40624, 50780, 63475, 101560, 126950, 203120, 253900, 317375, 507800, 634750, 1015600, 1269500, 1586875, 2539000, 3173750, 5078000, 6347500, 12695000, 25390000]

約数ペア:

[(1, 25390000), (2, 12695000), (4, 6347500), (5, 5078000), (8, 3173750), (10, 2539000), (16, 1586875), (20, 1269500), (25, 1015600), (40, 634750), (50, 507800), (80, 317375), (100, 253900), (125, 203120), (200, 126950), (250, 101560), (400, 63475), (500, 50780), (625, 40624), (1000, 25390), (1250, 20312), (2000, 12695), (2500, 10156), (2539, 10000), (5000, 5078)]