163900780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{1979}}^1$

素因数の和:2130

約数の個数: 48

約数和(自身を含む): 356257440

約数和(自身を除く): 192356660

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 101, 164, 202, 205, 404, 410, 505, 820, 1010, 1979, 2020, 3958, 4141, 7916, 8282, 9895, 16564, 19790, 20705, 39580, 41410, 81139, 82820, 162278, 199879, 324556, 399758, 405695, 799516, 811390, 999395, 1622780, 1998790, 3997580, 8195039, 16390078, 32780156, 40975195, 81950390, 163900780]

約数ペア:

[(1, 163900780), (2, 81950390), (4, 40975195), (5, 32780156), (10, 16390078), (20, 8195039), (41, 3997580), (82, 1998790), (101, 1622780), (164, 999395), (202, 811390), (205, 799516), (404, 405695), (410, 399758), (505, 324556), (820, 199879), (1010, 162278), (1979, 82820), (2020, 81139), (3958, 41410), (4141, 39580), (7916, 20705), (8282, 19790), (9895, 16564)]