21497418

素因数分解:

$2^1\times 3^2\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{431}}^1$

素因数の和:619

約数の個数: 48

約数和(自身を含む): 49735296

約数和(自身を除く): 28237878

約数列:

[1, 2, 3, 6, 9, 17, 18, 34, 51, 102, 153, 163, 306, 326, 431, 489, 862, 978, 1293, 1467, 2586, 2771, 2934, 3879, 5542, 7327, 7758, 8313, 14654, 16626, 21981, 24939, 43962, 49878, 65943, 70253, 131886, 140506, 210759, 421518, 632277, 1194301, 1264554, 2388602, 3582903, 7165806, 10748709, 21497418]

約数ペア:

[(1, 21497418), (2, 10748709), (3, 7165806), (6, 3582903), (9, 2388602), (17, 1264554), (18, 1194301), (34, 632277), (51, 421518), (102, 210759), (153, 140506), (163, 131886), (306, 70253), (326, 65943), (431, 49878), (489, 43962), (862, 24939), (978, 21981), (1293, 16626), (1467, 14654), (2586, 8313), (2771, 7758), (2934, 7327), (3879, 5542)]