218780560

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{63599}}^1$

素因数の和:63655

約数の個数: 40

約数和(自身を含む): 520502400

約数和(自身を除く): 301721840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 63599, 127198, 254396, 317995, 508792, 635990, 1017584, 1271980, 2543960, 2734757, 5087920, 5469514, 10939028, 13673785, 21878056, 27347570, 43756112, 54695140, 109390280, 218780560]

約数ペア:

[(1, 218780560), (2, 109390280), (4, 54695140), (5, 43756112), (8, 27347570), (10, 21878056), (16, 13673785), (20, 10939028), (40, 5469514), (43, 5087920), (80, 2734757), (86, 2543960), (172, 1271980), (215, 1017584), (344, 635990), (430, 508792), (688, 317995), (860, 254396), (1720, 127198), (3440, 63599)]