20413818

素因数分解:

$2^1\times 3^2\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{199}}^1$

素因数の和:387

約数の個数: 48

約数和(自身を含む): 45864000

約数和(自身を除く): 25450182

約数列:

[1, 2, 3, 6, 9, 18, 41, 82, 123, 139, 199, 246, 278, 369, 398, 417, 597, 738, 834, 1194, 1251, 1791, 2502, 3582, 5699, 8159, 11398, 16318, 17097, 24477, 27661, 34194, 48954, 51291, 55322, 73431, 82983, 102582, 146862, 165966, 248949, 497898, 1134101, 2268202, 3402303, 6804606, 10206909, 20413818]

約数ペア:

[(1, 20413818), (2, 10206909), (3, 6804606), (6, 3402303), (9, 2268202), (18, 1134101), (41, 497898), (82, 248949), (123, 165966), (139, 146862), (199, 102582), (246, 82983), (278, 73431), (369, 55322), (398, 51291), (417, 48954), (597, 34194), (738, 27661), (834, 24477), (1194, 17097), (1251, 16318), (1791, 11398), (2502, 8159), (3582, 5699)]