21189296

素因数分解:

$2^4\times {\mathrm{331}}^1\times {\mathrm{4001}}^1$

素因数の和:4340

約数の個数: 20

約数和(自身を含む): 41188584

約数和(自身を除く): 19999288

約数列:

[1, 2, 4, 8, 16, 331, 662, 1324, 2648, 4001, 5296, 8002, 16004, 32008, 64016, 1324331, 2648662, 5297324, 10594648, 21189296]

約数ペア:

[(1, 21189296), (2, 10594648), (4, 5297324), (8, 2648662), (16, 1324331), (331, 64016), (662, 32008), (1324, 16004), (2648, 8002), (4001, 5296)]