19801340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{76159}}^1$

素因数の和:76181

約数の個数: 24

約数和(自身を含む): 44782080

約数和(自身を除く): 24980740

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 76159, 152318, 304636, 380795, 761590, 990067, 1523180, 1980134, 3960268, 4950335, 9900670, 19801340]

約数ペア:

[(1, 19801340), (2, 9900670), (4, 4950335), (5, 3960268), (10, 1980134), (13, 1523180), (20, 990067), (26, 761590), (52, 380795), (65, 304636), (130, 152318), (260, 76159)]