87661240

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{21277}}^1$

素因数の和:21391

約数の個数: 32

約数和(自身を含む): 199162080

約数和(自身を除く): 111500840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 21277, 42554, 85108, 106385, 170216, 212770, 425540, 851080, 2191531, 4383062, 8766124, 10957655, 17532248, 21915310, 43830620, 87661240]

約数ペア:

[(1, 87661240), (2, 43830620), (4, 21915310), (5, 17532248), (8, 10957655), (10, 8766124), (20, 4383062), (40, 2191531), (103, 851080), (206, 425540), (412, 212770), (515, 170216), (824, 106385), (1030, 85108), (2060, 42554), (4120, 21277)]