168065720

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{19913}}^1$

素因数の和:20135

約数の個数: 32

約数和(自身を含む): 379959120

約数和(自身を除く): 211893400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 4220, 8440, 19913, 39826, 79652, 99565, 159304, 199130, 398260, 796520, 4201643, 8403286, 16806572, 21008215, 33613144, 42016430, 84032860, 168065720]

約数ペア:

[(1, 168065720), (2, 84032860), (4, 42016430), (5, 33613144), (8, 21008215), (10, 16806572), (20, 8403286), (40, 4201643), (211, 796520), (422, 398260), (844, 199130), (1055, 159304), (1688, 99565), (2110, 79652), (4220, 39826), (8440, 19913)]