21488696

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{1297}}^1$

素因数の和:1431

約数の個数: 32

約数和(自身を含む): 42834000

約数和(自身を除く): 21345304

約数列:

[1, 2, 4, 8, 19, 38, 76, 109, 152, 218, 436, 872, 1297, 2071, 2594, 4142, 5188, 8284, 10376, 16568, 24643, 49286, 98572, 141373, 197144, 282746, 565492, 1130984, 2686087, 5372174, 10744348, 21488696]

約数ペア:

[(1, 21488696), (2, 10744348), (4, 5372174), (8, 2686087), (19, 1130984), (38, 565492), (76, 282746), (109, 197144), (152, 141373), (218, 98572), (436, 49286), (872, 24643), (1297, 16568), (2071, 10376), (2594, 8284), (4142, 5188)]