19946420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{76717}}^1$

素因数の和:76739

約数の個数: 24

約数和(自身を含む): 45110184

約数和(自身を除く): 25163764

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 76717, 153434, 306868, 383585, 767170, 997321, 1534340, 1994642, 3989284, 4986605, 9973210, 19946420]

約数ペア:

[(1, 19946420), (2, 9973210), (4, 4986605), (5, 3989284), (10, 1994642), (13, 1534340), (20, 997321), (26, 767170), (52, 383585), (65, 306868), (130, 153434), (260, 76717)]