21021448

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{859}}^1$

素因数の和:914

約数の個数: 64

約数和(自身を含む): 49536000

約数和(自身を除く): 28514552

約数列:

[1, 2, 4, 7, 8, 14, 19, 23, 28, 38, 46, 56, 76, 92, 133, 152, 161, 184, 266, 322, 437, 532, 644, 859, 874, 1064, 1288, 1718, 1748, 3059, 3436, 3496, 6013, 6118, 6872, 12026, 12236, 16321, 19757, 24052, 24472, 32642, 39514, 48104, 65284, 79028, 114247, 130568, 138299, 158056, 228494, 276598, 375383, 456988, 553196, 750766, 913976, 1106392, 1501532, 2627681, 3003064, 5255362, 10510724, 21021448]

約数ペア:

[(1, 21021448), (2, 10510724), (4, 5255362), (7, 3003064), (8, 2627681), (14, 1501532), (19, 1106392), (23, 913976), (28, 750766), (38, 553196), (46, 456988), (56, 375383), (76, 276598), (92, 228494), (133, 158056), (152, 138299), (161, 130568), (184, 114247), (266, 79028), (322, 65284), (437, 48104), (532, 39514), (644, 32642), (859, 24472), (874, 24052), (1064, 19757), (1288, 16321), (1718, 12236), (1748, 12026), (3059, 6872), (3436, 6118), (3496, 6013)]