28071765

素因数分解:

$3^4\times 5^1\times {\mathrm{69313}}^1$

素因数の和:69330

約数の個数: 20

約数和(自身を含む): 50321964

約数和(自身を除く): 22250199

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 69313, 207939, 346565, 623817, 1039695, 1871451, 3119085, 5614353, 9357255, 28071765]

約数ペア:

[(1, 28071765), (3, 9357255), (5, 5614353), (9, 3119085), (15, 1871451), (27, 1039695), (45, 623817), (81, 346565), (135, 207939), (405, 69313)]