259640420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{998617}}^1$

素因数の和:998639

約数の個数: 24

約数和(自身を含む): 587187384

約数和(自身を除く): 327546964

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 998617, 1997234, 3994468, 4993085, 9986170, 12982021, 19972340, 25964042, 51928084, 64910105, 129820210, 259640420]

約数ペア:

[(1, 259640420), (2, 129820210), (4, 64910105), (5, 51928084), (10, 25964042), (13, 19972340), (20, 12982021), (26, 9986170), (52, 4993085), (65, 3994468), (130, 1997234), (260, 998617)]