18895821

素因数分解:

$3^1\times 7^2\times {\mathrm{191}}^1\times {\mathrm{673}}^1$

素因数の和:881

約数の個数: 24

約数和(自身を含む): 29505024

約数和(自身を除く): 10609203

約数列:

[1, 3, 7, 21, 49, 147, 191, 573, 673, 1337, 2019, 4011, 4711, 9359, 14133, 28077, 32977, 98931, 128543, 385629, 899801, 2699403, 6298607, 18895821]

約数ペア:

[(1, 18895821), (3, 6298607), (7, 2699403), (21, 899801), (49, 385629), (147, 128543), (191, 98931), (573, 32977), (673, 28077), (1337, 14133), (2019, 9359), (4011, 4711)]