21084786

素因数分解:

$2^1\times 3^4\times {\mathrm{157}}^1\times {\mathrm{829}}^1$

素因数の和:1000

約数の個数: 40

約数和(自身を含む): 47603820

約数和(自身を除く): 26519034

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 157, 162, 314, 471, 829, 942, 1413, 1658, 2487, 2826, 4239, 4974, 7461, 8478, 12717, 14922, 22383, 25434, 44766, 67149, 130153, 134298, 260306, 390459, 780918, 1171377, 2342754, 3514131, 7028262, 10542393, 21084786]

約数ペア:

[(1, 21084786), (2, 10542393), (3, 7028262), (6, 3514131), (9, 2342754), (18, 1171377), (27, 780918), (54, 390459), (81, 260306), (157, 134298), (162, 130153), (314, 67149), (471, 44766), (829, 25434), (942, 22383), (1413, 14922), (1658, 12717), (2487, 8478), (2826, 7461), (4239, 4974)]