21390544

素因数分解:

$2^4\times 7^1\times {\mathrm{331}}^1\times {\mathrm{577}}^1$

素因数の和:923

約数の個数: 40

約数和(自身を含む): 47590208

約数和(自身を除く): 26199664

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 331, 577, 662, 1154, 1324, 2308, 2317, 2648, 4039, 4616, 4634, 5296, 8078, 9232, 9268, 16156, 18536, 32312, 37072, 64624, 190987, 381974, 763948, 1336909, 1527896, 2673818, 3055792, 5347636, 10695272, 21390544]

約数ペア:

[(1, 21390544), (2, 10695272), (4, 5347636), (7, 3055792), (8, 2673818), (14, 1527896), (16, 1336909), (28, 763948), (56, 381974), (112, 190987), (331, 64624), (577, 37072), (662, 32312), (1154, 18536), (1324, 16156), (2308, 9268), (2317, 9232), (2648, 8078), (4039, 5296), (4616, 4634)]