81204075

素因数分解:

$3^2\times 5^2\times {\mathrm{360907}}^1$

素因数の和:360923

約数の個数: 18

約数和(自身を含む): 145445924

約数和(自身を除く): 64241849

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 360907, 1082721, 1804535, 3248163, 5413605, 9022675, 16240815, 27068025, 81204075]

約数ペア:

[(1, 81204075), (3, 27068025), (5, 16240815), (9, 9022675), (15, 5413605), (25, 3248163), (45, 1804535), (75, 1082721), (225, 360907)]