21098032

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{19681}}^1$

素因数の和:19756

約数の個数: 20

約数和(自身を含む): 41489656

約数和(自身を除く): 20391624

約数列:

[1, 2, 4, 8, 16, 67, 134, 268, 536, 1072, 19681, 39362, 78724, 157448, 314896, 1318627, 2637254, 5274508, 10549016, 21098032]

約数ペア:

[(1, 21098032), (2, 10549016), (4, 5274508), (8, 2637254), (16, 1318627), (67, 314896), (134, 157448), (268, 78724), (536, 39362), (1072, 19681)]