21304016

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{70079}}^1$

素因数の和:70106

約数の個数: 20

約数和(自身を含む): 43449600

約数和(自身を除く): 22145584

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 70079, 140158, 280316, 560632, 1121264, 1331501, 2663002, 5326004, 10652008, 21304016]

約数ペア:

[(1, 21304016), (2, 10652008), (4, 5326004), (8, 2663002), (16, 1331501), (19, 1121264), (38, 560632), (76, 280316), (152, 140158), (304, 70079)]