218194520

素因数分解:

$2^3\times 5^1\times {\mathrm{173}}^1\times {\mathrm{31531}}^1$

素因数の和:31715

約数の個数: 32

約数和(自身を含む): 493791120

約数和(自身を除く): 275596600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 173, 346, 692, 865, 1384, 1730, 3460, 6920, 31531, 63062, 126124, 157655, 252248, 315310, 630620, 1261240, 5454863, 10909726, 21819452, 27274315, 43638904, 54548630, 109097260, 218194520]

約数ペア:

[(1, 218194520), (2, 109097260), (4, 54548630), (5, 43638904), (8, 27274315), (10, 21819452), (20, 10909726), (40, 5454863), (173, 1261240), (346, 630620), (692, 315310), (865, 252248), (1384, 157655), (1730, 126124), (3460, 63062), (6920, 31531)]