20180420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{77617}}^1$

素因数の和:77639

約数の個数: 24

約数和(自身を含む): 45639384

約数和(自身を除く): 25458964

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 77617, 155234, 310468, 388085, 776170, 1009021, 1552340, 2018042, 4036084, 5045105, 10090210, 20180420]

約数ペア:

[(1, 20180420), (2, 10090210), (4, 5045105), (5, 4036084), (10, 2018042), (13, 1552340), (20, 1009021), (26, 776170), (52, 388085), (65, 310468), (130, 155234), (260, 77617)]