221520790

素因数分解:

$2^1\times 5^1\times {\mathrm{5471}}^1\times {\mathrm{4049}}^1$

素因数の和:9527

約数の個数: 16

約数和(自身を含む): 398908800

約数和(自身を除く): 177388010

約数列:

[1, 2, 5, 10, 4049, 5471, 8098, 10942, 20245, 27355, 40490, 54710, 22152079, 44304158, 110760395, 221520790]

約数ペア:

[(1, 221520790), (2, 110760395), (5, 44304158), (10, 22152079), (4049, 54710), (5471, 40490), (8098, 27355), (10942, 20245)]