21499252

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{337}}^1\times {\mathrm{389}}^1$

素因数の和:771

約数の個数: 24

約数和(自身を含む): 38755080

約数和(自身を除く): 17255828

約数列:

[1, 2, 4, 41, 82, 164, 337, 389, 674, 778, 1348, 1556, 13817, 15949, 27634, 31898, 55268, 63796, 131093, 262186, 524372, 5374813, 10749626, 21499252]

約数ペア:

[(1, 21499252), (2, 10749626), (4, 5374813), (41, 524372), (82, 262186), (164, 131093), (337, 63796), (389, 55268), (674, 31898), (778, 27634), (1348, 15949), (1556, 13817)]