18200637

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{313}}^1$

素因数の和:410

約数の個数: 48

約数和(自身を含む): 32917248

約数和(自身を除く): 14716611

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 71, 91, 117, 213, 273, 313, 497, 639, 819, 923, 939, 1491, 2191, 2769, 2817, 4069, 4473, 6461, 6573, 8307, 12207, 19383, 19719, 22223, 28483, 36621, 58149, 66669, 85449, 155561, 200007, 256347, 288899, 466683, 866697, 1400049, 2022293, 2600091, 6066879, 18200637]

約数ペア:

[(1, 18200637), (3, 6066879), (7, 2600091), (9, 2022293), (13, 1400049), (21, 866697), (39, 466683), (63, 288899), (71, 256347), (91, 200007), (117, 155561), (213, 85449), (273, 66669), (313, 58149), (497, 36621), (639, 28483), (819, 22223), (923, 19719), (939, 19383), (1491, 12207), (2191, 8307), (2769, 6573), (2817, 6461), (4069, 4473)]