21878504

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{107}}^1\times {\mathrm{419}}^1$

素因数の和:593

約数の個数: 32

約数和(自身を含む): 42184800

約数和(自身を除く): 20306296

約数列:

[1, 2, 4, 8, 61, 107, 122, 214, 244, 419, 428, 488, 838, 856, 1676, 3352, 6527, 13054, 25559, 26108, 44833, 51118, 52216, 89666, 102236, 179332, 204472, 358664, 2734813, 5469626, 10939252, 21878504]

約数ペア:

[(1, 21878504), (2, 10939252), (4, 5469626), (8, 2734813), (61, 358664), (107, 204472), (122, 179332), (214, 102236), (244, 89666), (419, 52216), (428, 51118), (488, 44833), (838, 26108), (856, 25559), (1676, 13054), (3352, 6527)]