2540260

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{809}}^1$

素因数の和:975

約数の個数: 24

約数和(自身を含む): 5375160

約数和(自身を除く): 2834900

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 809, 1570, 1618, 3140, 3236, 4045, 8090, 16180, 127013, 254026, 508052, 635065, 1270130, 2540260]

約数ペア:

[(1, 2540260), (2, 1270130), (4, 635065), (5, 508052), (10, 254026), (20, 127013), (157, 16180), (314, 8090), (628, 4045), (785, 3236), (809, 3140), (1570, 1618)]