221477480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{790991}}^1$

素因数の和:791009

約数の個数: 32

約数和(自身を含む): 569514240

約数和(自身を除く): 348036760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 790991, 1581982, 3163964, 3954955, 5536937, 6327928, 7909910, 11073874, 15819820, 22147748, 27684685, 31639640, 44295496, 55369370, 110738740, 221477480]

約数ペア:

[(1, 221477480), (2, 110738740), (4, 55369370), (5, 44295496), (7, 31639640), (8, 27684685), (10, 22147748), (14, 15819820), (20, 11073874), (28, 7909910), (35, 6327928), (40, 5536937), (56, 3954955), (70, 3163964), (140, 1581982), (280, 790991)]