68871980

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1\times {\mathrm{499}}^1$

素因数の和:678

約数の個数: 48

約数和(自身を含む): 148512000

約数和(自身を除く): 79640020

約数列:

[1, 2, 4, 5, 10, 20, 67, 103, 134, 206, 268, 335, 412, 499, 515, 670, 998, 1030, 1340, 1996, 2060, 2495, 4990, 6901, 9980, 13802, 27604, 33433, 34505, 51397, 66866, 69010, 102794, 133732, 138020, 167165, 205588, 256985, 334330, 513970, 668660, 1027940, 3443599, 6887198, 13774396, 17217995, 34435990, 68871980]

約数ペア:

[(1, 68871980), (2, 34435990), (4, 17217995), (5, 13774396), (10, 6887198), (20, 3443599), (67, 1027940), (103, 668660), (134, 513970), (206, 334330), (268, 256985), (335, 205588), (412, 167165), (499, 138020), (515, 133732), (670, 102794), (998, 69010), (1030, 66866), (1340, 51397), (1996, 34505), (2060, 33433), (2495, 27604), (4990, 13802), (6901, 9980)]