19390690

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{409}}^1\times {\mathrm{431}}^1$

素因数の和:858

約数の個数: 32

約数和(自身を含む): 38257920

約数和(自身を除く): 18867230

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 409, 431, 818, 862, 2045, 2155, 4090, 4310, 4499, 4741, 8998, 9482, 22495, 23705, 44990, 47410, 176279, 352558, 881395, 1762790, 1939069, 3878138, 9695345, 19390690]

約数ペア:

[(1, 19390690), (2, 9695345), (5, 3878138), (10, 1939069), (11, 1762790), (22, 881395), (55, 352558), (110, 176279), (409, 47410), (431, 44990), (818, 23705), (862, 22495), (2045, 9482), (2155, 8998), (4090, 4741), (4310, 4499)]