21278904

素因数分解:

$2^3\times 3^1\times {\mathrm{373}}^1\times {\mathrm{2377}}^1$

素因数の和:2759

約数の個数: 32

約数和(自身を含む): 53362320

約数和(自身を除く): 32083416

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 373, 746, 1119, 1492, 2238, 2377, 2984, 4476, 4754, 7131, 8952, 9508, 14262, 19016, 28524, 57048, 886621, 1773242, 2659863, 3546484, 5319726, 7092968, 10639452, 21278904]

約数ペア:

[(1, 21278904), (2, 10639452), (3, 7092968), (4, 5319726), (6, 3546484), (8, 2659863), (12, 1773242), (24, 886621), (373, 57048), (746, 28524), (1119, 19016), (1492, 14262), (2238, 9508), (2377, 8952), (2984, 7131), (4476, 4754)]