20480480836

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{293}}^2$

素因数の和:725

約数の個数: 72

約数和(自身を含む): 39267425120

約数和(自身を除く): 18786944284

約数列:

[1, 2, 4, 19, 38, 43, 73, 76, 86, 146, 172, 292, 293, 586, 817, 1172, 1387, 1634, 2774, 3139, 3268, 5548, 5567, 6278, 11134, 12556, 12599, 21389, 22268, 25198, 42778, 50396, 59641, 85556, 85849, 119282, 171698, 238564, 239381, 343396, 406391, 478762, 812782, 919727, 957524, 1625564, 1631131, 1839454, 3262262, 3678908, 3691507, 6266977, 6524524, 7383014, 12533954, 14766028, 17474813, 25067908, 34949626, 69899252, 70138633, 119072563, 140277266, 238145126, 269480011, 280554532, 476290252, 538960022, 1077920044, 5120120209, 10240240418, 20480480836]

約数ペア:

[(1, 20480480836), (2, 10240240418), (4, 5120120209), (19, 1077920044), (38, 538960022), (43, 476290252), (73, 280554532), (76, 269480011), (86, 238145126), (146, 140277266), (172, 119072563), (292, 70138633), (293, 69899252), (586, 34949626), (817, 25067908), (1172, 17474813), (1387, 14766028), (1634, 12533954), (2774, 7383014), (3139, 6524524), (3268, 6266977), (5548, 3691507), (5567, 3678908), (6278, 3262262), (11134, 1839454), (12556, 1631131), (12599, 1625564), (21389, 957524), (22268, 919727), (25198, 812782), (42778, 478762), (50396, 406391), (59641, 343396), (85556, 239381), (85849, 238564), (119282, 171698)]