218954540

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{223423}}^1$

素因数の和:223446

約数の個数: 36

約数和(自身を含む): 534877056

約数和(自身を除く): 315922516

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 223423, 446846, 893692, 1117115, 1563961, 2234230, 3127922, 4468460, 6255844, 7819805, 10947727, 15639610, 21895454, 31279220, 43790908, 54738635, 109477270, 218954540]

約数ペア:

[(1, 218954540), (2, 109477270), (4, 54738635), (5, 43790908), (7, 31279220), (10, 21895454), (14, 15639610), (20, 10947727), (28, 7819805), (35, 6255844), (49, 4468460), (70, 3127922), (98, 2234230), (140, 1563961), (196, 1117115), (245, 893692), (490, 446846), (980, 223423)]