1281995

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{163}}^1$

素因数の和:203

約数の個数: 24

約数和(自身を含む): 1832208

約数和(自身を除く): 550213

約数列:

[1, 5, 11, 13, 55, 65, 121, 143, 163, 605, 715, 815, 1573, 1793, 2119, 7865, 8965, 10595, 19723, 23309, 98615, 116545, 256399, 1281995]

約数ペア:

[(1, 1281995), (5, 256399), (11, 116545), (13, 98615), (55, 23309), (65, 19723), (121, 10595), (143, 8965), (163, 7865), (605, 2119), (715, 1793), (815, 1573)]