28996905

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{12007}}^1$

素因数の和:12045

約数の個数: 32

約数和(自身を含む): 55332864

約数和(自身を除く): 26335959

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 69, 105, 115, 161, 345, 483, 805, 2415, 12007, 36021, 60035, 84049, 180105, 252147, 276161, 420245, 828483, 1260735, 1380805, 1933127, 4142415, 5799381, 9665635, 28996905]

約数ペア:

[(1, 28996905), (3, 9665635), (5, 5799381), (7, 4142415), (15, 1933127), (21, 1380805), (23, 1260735), (35, 828483), (69, 420245), (105, 276161), (115, 252147), (161, 180105), (345, 84049), (483, 60035), (805, 36021), (2415, 12007)]