205245380

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{144539}}^1$

素因数の和:144619

約数の個数: 24

約数和(自身を含む): 437088960

約数和(自身を除く): 231843580

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 144539, 289078, 578156, 722695, 1445390, 2890780, 10262269, 20524538, 41049076, 51311345, 102622690, 205245380]

約数ペア:

[(1, 205245380), (2, 102622690), (4, 51311345), (5, 41049076), (10, 20524538), (20, 10262269), (71, 2890780), (142, 1445390), (284, 722695), (355, 578156), (710, 289078), (1420, 144539)]