20800221

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{347}}^1$

素因数の和:445

約数の個数: 32

約数和(自身を含む): 31570560

約数和(自身を除く): 10770339

約数列:

[1, 3, 13, 29, 39, 53, 87, 159, 347, 377, 689, 1041, 1131, 1537, 2067, 4511, 4611, 10063, 13533, 18391, 19981, 30189, 55173, 59943, 130819, 239083, 392457, 533339, 717249, 1600017, 6933407, 20800221]

約数ペア:

[(1, 20800221), (3, 6933407), (13, 1600017), (29, 717249), (39, 533339), (53, 392457), (87, 239083), (159, 130819), (347, 59943), (377, 55173), (689, 30189), (1041, 19981), (1131, 18391), (1537, 13533), (2067, 10063), (4511, 4611)]