19660420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{75617}}^1$

素因数の和:75639

約数の個数: 24

約数和(自身を含む): 44463384

約数和(自身を除く): 24802964

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 75617, 151234, 302468, 378085, 756170, 983021, 1512340, 1966042, 3932084, 4915105, 9830210, 19660420]

約数ペア:

[(1, 19660420), (2, 9830210), (4, 4915105), (5, 3932084), (10, 1966042), (13, 1512340), (20, 983021), (26, 756170), (52, 378085), (65, 302468), (130, 151234), (260, 75617)]