21488012

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{239}}^1$

素因数の和:295

約数の個数: 72

約数和(自身を含む): 49190400

約数和(自身を除く): 27702388

約数列:

[1, 2, 4, 7, 13, 14, 19, 26, 28, 38, 52, 76, 91, 133, 169, 182, 239, 247, 266, 338, 364, 478, 494, 532, 676, 956, 988, 1183, 1673, 1729, 2366, 3107, 3211, 3346, 3458, 4541, 4732, 6214, 6422, 6692, 6916, 9082, 12428, 12844, 18164, 21749, 22477, 31787, 40391, 43498, 44954, 59033, 63574, 80782, 86996, 89908, 118066, 127148, 161564, 236132, 282737, 413231, 565474, 767429, 826462, 1130948, 1534858, 1652924, 3069716, 5372003, 10744006, 21488012]

約数ペア:

[(1, 21488012), (2, 10744006), (4, 5372003), (7, 3069716), (13, 1652924), (14, 1534858), (19, 1130948), (26, 826462), (28, 767429), (38, 565474), (52, 413231), (76, 282737), (91, 236132), (133, 161564), (169, 127148), (182, 118066), (239, 89908), (247, 86996), (266, 80782), (338, 63574), (364, 59033), (478, 44954), (494, 43498), (532, 40391), (676, 31787), (956, 22477), (988, 21749), (1183, 18164), (1673, 12844), (1729, 12428), (2366, 9082), (3107, 6916), (3211, 6692), (3346, 6422), (3458, 6214), (4541, 4732)]