16977980

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{5407}}^1$

素因数の和:5573

約数の個数: 24

約数和(自身を含む): 35887488

約数和(自身を除く): 18909508

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 5407, 10814, 21628, 27035, 54070, 108140, 848899, 1697798, 3395596, 4244495, 8488990, 16977980]

約数ペア:

[(1, 16977980), (2, 8488990), (4, 4244495), (5, 3395596), (10, 1697798), (20, 848899), (157, 108140), (314, 54070), (628, 27035), (785, 21628), (1570, 10814), (3140, 5407)]