1276400

素因数分解:

$2^4\times 5^2\times {\mathrm{3191}}^1$

素因数の和:3209

約数の個数: 30

約数和(自身を含む): 3067512

約数和(自身を除く): 1791112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 3191, 6382, 12764, 15955, 25528, 31910, 51056, 63820, 79775, 127640, 159550, 255280, 319100, 638200, 1276400]

約数ペア:

[(1, 1276400), (2, 638200), (4, 319100), (5, 255280), (8, 159550), (10, 127640), (16, 79775), (20, 63820), (25, 51056), (40, 31910), (50, 25528), (80, 15955), (100, 12764), (200, 6382), (400, 3191)]