20178163761

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{353}}^1\times {\mathrm{143263}}^1$

素因数の和:143645

約数の個数: 32

約数和(自身を含む): 32457891840

約数和(自身を除く): 12279728079

約数列:

[1, 3, 7, 19, 21, 57, 133, 353, 399, 1059, 2471, 6707, 7413, 20121, 46949, 140847, 143263, 429789, 1002841, 2721997, 3008523, 8165991, 19053979, 50571839, 57161937, 151715517, 354002873, 960864941, 1062008619, 2882594823, 6726054587, 20178163761]

約数ペア:

[(1, 20178163761), (3, 6726054587), (7, 2882594823), (19, 1062008619), (21, 960864941), (57, 354002873), (133, 151715517), (353, 57161937), (399, 50571839), (1059, 19053979), (2471, 8165991), (6707, 3008523), (7413, 2721997), (20121, 1002841), (46949, 429789), (140847, 143263)]