220388620

素因数分解:

$2^2\times 5^1\times {\mathrm{641}}^1\times {\mathrm{17191}}^1$

素因数の和:17841

約数の個数: 24

約数和(自身を含む): 463565088

約数和(自身を除く): 243176468

約数列:

[1, 2, 4, 5, 10, 20, 641, 1282, 2564, 3205, 6410, 12820, 17191, 34382, 68764, 85955, 171910, 343820, 11019431, 22038862, 44077724, 55097155, 110194310, 220388620]

約数ペア:

[(1, 220388620), (2, 110194310), (4, 55097155), (5, 44077724), (10, 22038862), (20, 11019431), (641, 343820), (1282, 171910), (2564, 85955), (3205, 68764), (6410, 34382), (12820, 17191)]