28509213

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{149}}^1$

素因数の和:281

約数の個数: 32

約数和(自身を含む): 41472000

約数和(自身を除く): 12962787

約数列:

[1, 3, 23, 47, 59, 69, 141, 149, 177, 447, 1081, 1357, 2773, 3243, 3427, 4071, 7003, 8319, 8791, 10281, 21009, 26373, 63779, 161069, 191337, 202193, 413177, 483207, 606579, 1239531, 9503071, 28509213]

約数ペア:

[(1, 28509213), (3, 9503071), (23, 1239531), (47, 606579), (59, 483207), (69, 413177), (141, 202193), (149, 191337), (177, 161069), (447, 63779), (1081, 26373), (1357, 21009), (2773, 10281), (3243, 8791), (3427, 8319), (4071, 7003)]