21619216

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{19031}}^1$

素因数の和:19110

約数の個数: 20

約数和(自身を含む): 42479424

約数和(自身を除く): 20860208

約数列:

[1, 2, 4, 8, 16, 71, 142, 284, 568, 1136, 19031, 38062, 76124, 152248, 304496, 1351201, 2702402, 5404804, 10809608, 21619216]

約数ペア:

[(1, 21619216), (2, 10809608), (4, 5404804), (8, 2702402), (16, 1351201), (71, 304496), (142, 152248), (284, 76124), (568, 38062), (1136, 19031)]