81089120

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{10343}}^1$

素因数の和:10372

約数の個数: 72

約数和(自身を含む): 222871824

約数和(自身を除く): 141782704

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 3920, 7840, 10343, 20686, 41372, 51715, 72401, 82744, 103430, 144802, 165488, 206860, 289604, 330976, 362005, 413720, 506807, 579208, 724010, 827440, 1013614, 1158416, 1448020, 1654880, 2027228, 2316832, 2534035, 2896040, 4054456, 5068070, 5792080, 8108912, 10136140, 11584160, 16217824, 20272280, 40544560, 81089120]

約数ペア:

[(1, 81089120), (2, 40544560), (4, 20272280), (5, 16217824), (7, 11584160), (8, 10136140), (10, 8108912), (14, 5792080), (16, 5068070), (20, 4054456), (28, 2896040), (32, 2534035), (35, 2316832), (40, 2027228), (49, 1654880), (56, 1448020), (70, 1158416), (80, 1013614), (98, 827440), (112, 724010), (140, 579208), (160, 506807), (196, 413720), (224, 362005), (245, 330976), (280, 289604), (392, 206860), (490, 165488), (560, 144802), (784, 103430), (980, 82744), (1120, 72401), (1568, 51715), (1960, 41372), (3920, 20686), (7840, 10343)]