25880000

素因数分解:

$2^6\times 5^4\times {\mathrm{647}}^1$

素因数の和:679

約数の個数: 70

約数和(自身を含む): 64273176

約数和(自身を除く): 38393176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 160, 200, 250, 320, 400, 500, 625, 647, 800, 1000, 1250, 1294, 1600, 2000, 2500, 2588, 3235, 4000, 5000, 5176, 6470, 8000, 10000, 10352, 12940, 16175, 20000, 20704, 25880, 32350, 40000, 41408, 51760, 64700, 80875, 103520, 129400, 161750, 207040, 258800, 323500, 404375, 517600, 647000, 808750, 1035200, 1294000, 1617500, 2588000, 3235000, 5176000, 6470000, 12940000, 25880000]

約数ペア:

[(1, 25880000), (2, 12940000), (4, 6470000), (5, 5176000), (8, 3235000), (10, 2588000), (16, 1617500), (20, 1294000), (25, 1035200), (32, 808750), (40, 647000), (50, 517600), (64, 404375), (80, 323500), (100, 258800), (125, 207040), (160, 161750), (200, 129400), (250, 103520), (320, 80875), (400, 64700), (500, 51760), (625, 41408), (647, 40000), (800, 32350), (1000, 25880), (1250, 20704), (1294, 20000), (1600, 16175), (2000, 12940), (2500, 10352), (2588, 10000), (3235, 8000), (4000, 6470), (5000, 5176)]