217984905

素因数分解:

$3^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{39383}}^1$

素因数の和:39438

約数の個数: 32

約数和(自身を含む): 396990720

約数和(自身を除く): 179005815

約数列:

[1, 3, 5, 9, 15, 27, 41, 45, 123, 135, 205, 369, 615, 1107, 1845, 5535, 39383, 118149, 196915, 354447, 590745, 1063341, 1614703, 1772235, 4844109, 5316705, 8073515, 14532327, 24220545, 43596981, 72661635, 217984905]

約数ペア:

[(1, 217984905), (3, 72661635), (5, 43596981), (9, 24220545), (15, 14532327), (27, 8073515), (41, 5316705), (45, 4844109), (123, 1772235), (135, 1614703), (205, 1063341), (369, 590745), (615, 354447), (1107, 196915), (1845, 118149), (5535, 39383)]