81394780

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{49033}}^1$

素因数の和:49125

約数の個数: 24

約数和(自身を含む): 172991952

約数和(自身を除く): 91597172

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 49033, 98066, 196132, 245165, 490330, 980660, 4069739, 8139478, 16278956, 20348695, 40697390, 81394780]

約数ペア:

[(1, 81394780), (2, 40697390), (4, 20348695), (5, 16278956), (10, 8139478), (20, 4069739), (83, 980660), (166, 490330), (332, 245165), (415, 196132), (830, 98066), (1660, 49033)]