280056400

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{53857}}^1$

素因数の和:53888

約数の個数: 60

約数和(自身を含む): 724605532

約数和(自身を除く): 444549132

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 650, 1040, 1300, 2600, 5200, 53857, 107714, 215428, 269285, 430856, 538570, 700141, 861712, 1077140, 1346425, 1400282, 2154280, 2692850, 2800564, 3500705, 4308560, 5385700, 5601128, 7001410, 10771400, 11202256, 14002820, 17503525, 21542800, 28005640, 35007050, 56011280, 70014100, 140028200, 280056400]

約数ペア:

[(1, 280056400), (2, 140028200), (4, 70014100), (5, 56011280), (8, 35007050), (10, 28005640), (13, 21542800), (16, 17503525), (20, 14002820), (25, 11202256), (26, 10771400), (40, 7001410), (50, 5601128), (52, 5385700), (65, 4308560), (80, 3500705), (100, 2800564), (104, 2692850), (130, 2154280), (200, 1400282), (208, 1346425), (260, 1077140), (325, 861712), (400, 700141), (520, 538570), (650, 430856), (1040, 269285), (1300, 215428), (2600, 107714), (5200, 53857)]