128400850

素因数分解:

$2^1\times 5^2\times {\mathrm{317}}^1\times {\mathrm{8101}}^1$

素因数の和:8430

約数の個数: 24

約数和(自身を含む): 239608548

約数和(自身を除く): 111207698

約数列:

[1, 2, 5, 10, 25, 50, 317, 634, 1585, 3170, 7925, 8101, 15850, 16202, 40505, 81010, 202525, 405050, 2568017, 5136034, 12840085, 25680170, 64200425, 128400850]

約数ペア:

[(1, 128400850), (2, 64200425), (5, 25680170), (10, 12840085), (25, 5136034), (50, 2568017), (317, 405050), (634, 202525), (1585, 81010), (3170, 40505), (7925, 16202), (8101, 15850)]