1981539

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{443}}^1$

素因数の和:527

約数の個数: 24

約数和(自身を含む): 3324672

約数和(自身を除く): 1343133

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 443, 497, 639, 1329, 1491, 3101, 3987, 4473, 9303, 27909, 31453, 94359, 220171, 283077, 660513, 1981539]

約数ペア:

[(1, 1981539), (3, 660513), (7, 283077), (9, 220171), (21, 94359), (63, 31453), (71, 27909), (213, 9303), (443, 4473), (497, 3987), (639, 3101), (1329, 1491)]