165720340

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{42061}}^1$

素因数の和:42267

約数の個数: 24

約数和(自身を含む): 349787592

約数和(自身を除く): 184067252

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 42061, 84122, 168244, 210305, 420610, 841220, 8286017, 16572034, 33144068, 41430085, 82860170, 165720340]

約数ペア:

[(1, 165720340), (2, 82860170), (4, 41430085), (5, 33144068), (10, 16572034), (20, 8286017), (197, 841220), (394, 420610), (788, 210305), (985, 168244), (1970, 84122), (3940, 42061)]