21082664

素因数分解:

$2^3\times {\mathrm{83}}^1\times {\mathrm{31751}}^1$

素因数の和:31840

約数の個数: 16

約数和(自身を含む): 40007520

約数和(自身を除く): 18924856

約数列:

[1, 2, 4, 8, 83, 166, 332, 664, 31751, 63502, 127004, 254008, 2635333, 5270666, 10541332, 21082664]

約数ペア:

[(1, 21082664), (2, 10541332), (4, 5270666), (8, 2635333), (83, 254008), (166, 127004), (332, 63502), (664, 31751)]