20105577

素因数分解:

$3^5\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1$

素因数の和:220

約数の個数: 48

約数和(自身を含む): 33126912

約数和(自身を除く): 13021335

約数列:

[1, 3, 9, 17, 27, 31, 51, 81, 93, 153, 157, 243, 279, 459, 471, 527, 837, 1377, 1413, 1581, 2511, 2669, 4131, 4239, 4743, 4867, 7533, 8007, 12717, 14229, 14601, 24021, 38151, 42687, 43803, 72063, 82739, 128061, 131409, 216189, 248217, 394227, 648567, 744651, 1182681, 2233953, 6701859, 20105577]

約数ペア:

[(1, 20105577), (3, 6701859), (9, 2233953), (17, 1182681), (27, 744651), (31, 648567), (51, 394227), (81, 248217), (93, 216189), (153, 131409), (157, 128061), (243, 82739), (279, 72063), (459, 43803), (471, 42687), (527, 38151), (837, 24021), (1377, 14601), (1413, 14229), (1581, 12717), (2511, 8007), (2669, 7533), (4131, 4867), (4239, 4743)]