28210995

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{281}}^1$

素因数の和:412

約数の個数: 48

約数和(自身を含む): 51734592

約数和(自身を除く): 23523597

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 97, 115, 207, 281, 291, 345, 485, 843, 873, 1035, 1405, 1455, 2231, 2529, 4215, 4365, 6463, 6693, 11155, 12645, 19389, 20079, 27257, 32315, 33465, 58167, 81771, 96945, 100395, 136285, 245313, 290835, 408855, 626911, 1226565, 1880733, 3134555, 5642199, 9403665, 28210995]

約数ペア:

[(1, 28210995), (3, 9403665), (5, 5642199), (9, 3134555), (15, 1880733), (23, 1226565), (45, 626911), (69, 408855), (97, 290835), (115, 245313), (207, 136285), (281, 100395), (291, 96945), (345, 81771), (485, 58167), (843, 33465), (873, 32315), (1035, 27257), (1405, 20079), (1455, 19389), (2231, 12645), (2529, 11155), (4215, 6693), (4365, 6463)]