6470000

素因数分解:

$2^4\times 5^4\times {\mathrm{647}}^1$

素因数の和:675

約数の個数: 50

約数和(自身を含む): 15688728

約数和(自身を除く): 9218728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 647, 1000, 1250, 1294, 2000, 2500, 2588, 3235, 5000, 5176, 6470, 10000, 10352, 12940, 16175, 25880, 32350, 51760, 64700, 80875, 129400, 161750, 258800, 323500, 404375, 647000, 808750, 1294000, 1617500, 3235000, 6470000]

約数ペア:

[(1, 6470000), (2, 3235000), (4, 1617500), (5, 1294000), (8, 808750), (10, 647000), (16, 404375), (20, 323500), (25, 258800), (40, 161750), (50, 129400), (80, 80875), (100, 64700), (125, 51760), (200, 32350), (250, 25880), (400, 16175), (500, 12940), (625, 10352), (647, 10000), (1000, 6470), (1250, 5176), (1294, 5000), (2000, 3235), (2500, 2588)]