1981265

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1$

素因数の和:209

約数の個数: 32

約数和(自身を含む): 2975616

約数和(自身を除く): 994351

約数列:

[1, 5, 11, 13, 17, 55, 65, 85, 143, 163, 187, 221, 715, 815, 935, 1105, 1793, 2119, 2431, 2771, 8965, 10595, 12155, 13855, 23309, 30481, 36023, 116545, 152405, 180115, 396253, 1981265]

約数ペア:

[(1, 1981265), (5, 396253), (11, 180115), (13, 152405), (17, 116545), (55, 36023), (65, 30481), (85, 23309), (143, 13855), (163, 12155), (187, 10595), (221, 8965), (715, 2771), (815, 2431), (935, 2119), (1105, 1793)]