20770988

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{12161}}^1$

素因数の和:12233

約数の個数: 24

約数和(自身を含む): 42226464

約数和(自身を除く): 21455476

約数列:

[1, 2, 4, 7, 14, 28, 61, 122, 244, 427, 854, 1708, 12161, 24322, 48644, 85127, 170254, 340508, 741821, 1483642, 2967284, 5192747, 10385494, 20770988]

約数ペア:

[(1, 20770988), (2, 10385494), (4, 5192747), (7, 2967284), (14, 1483642), (28, 741821), (61, 340508), (122, 170254), (244, 85127), (427, 48644), (854, 24322), (1708, 12161)]