128465000

素因数分解:

$2^3\times 5^4\times {\mathrm{25693}}^1$

素因数の和:25719

約数の個数: 40

約数和(自身を含む): 301005210

約数和(自身を除く): 172540210

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 2500, 5000, 25693, 51386, 102772, 128465, 205544, 256930, 513860, 642325, 1027720, 1284650, 2569300, 3211625, 5138600, 6423250, 12846500, 16058125, 25693000, 32116250, 64232500, 128465000]

約数ペア:

[(1, 128465000), (2, 64232500), (4, 32116250), (5, 25693000), (8, 16058125), (10, 12846500), (20, 6423250), (25, 5138600), (40, 3211625), (50, 2569300), (100, 1284650), (125, 1027720), (200, 642325), (250, 513860), (500, 256930), (625, 205544), (1000, 128465), (1250, 102772), (2500, 51386), (5000, 25693)]