28615815

素因数分解:

$3^3\times 5^1\times {\mathrm{211969}}^1$

素因数の和:211983

約数の個数: 16

約数和(自身を含む): 50872800

約数和(自身を除く): 22256985

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 211969, 635907, 1059845, 1907721, 3179535, 5723163, 9538605, 28615815]

約数ペア:

[(1, 28615815), (3, 9538605), (5, 5723163), (9, 3179535), (15, 1907721), (27, 1059845), (45, 635907), (135, 211969)]