19691637

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{281}}^1$

素因数の和:409

約数の個数: 32

約数和(自身を含む): 31186944

約数和(自身を除く): 11495307

約数列:

[1, 3, 7, 21, 47, 71, 141, 213, 281, 329, 497, 843, 987, 1491, 1967, 3337, 5901, 10011, 13207, 19951, 23359, 39621, 59853, 70077, 92449, 139657, 277347, 418971, 937697, 2813091, 6563879, 19691637]

約数ペア:

[(1, 19691637), (3, 6563879), (7, 2813091), (21, 937697), (47, 418971), (71, 277347), (141, 139657), (213, 92449), (281, 70077), (329, 59853), (497, 39621), (843, 23359), (987, 19951), (1491, 13207), (1967, 10011), (3337, 5901)]