28613265

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1\times {\mathrm{421}}^1$

素因数の和:649

約数の個数: 32

約数和(自身を含む): 48128256

約数和(自身を除く): 19514991

約数列:

[1, 3, 5, 15, 23, 69, 115, 197, 345, 421, 591, 985, 1263, 2105, 2955, 4531, 6315, 9683, 13593, 22655, 29049, 48415, 67965, 82937, 145245, 248811, 414685, 1244055, 1907551, 5722653, 9537755, 28613265]

約数ペア:

[(1, 28613265), (3, 9537755), (5, 5722653), (15, 1907551), (23, 1244055), (69, 414685), (115, 248811), (197, 145245), (345, 82937), (421, 67965), (591, 48415), (985, 29049), (1263, 22655), (2105, 13593), (2955, 9683), (4531, 6315)]