217290280

素因数分解:

$2^3\times 5^1\times {\mathrm{547}}^1\times {\mathrm{9931}}^1$

素因数の和:10489

約数の個数: 32

約数和(自身を含む): 489846240

約数和(自身を除く): 272555960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 547, 1094, 2188, 2735, 4376, 5470, 9931, 10940, 19862, 21880, 39724, 49655, 79448, 99310, 198620, 397240, 5432257, 10864514, 21729028, 27161285, 43458056, 54322570, 108645140, 217290280]

約数ペア:

[(1, 217290280), (2, 108645140), (4, 54322570), (5, 43458056), (8, 27161285), (10, 21729028), (20, 10864514), (40, 5432257), (547, 397240), (1094, 198620), (2188, 99310), (2735, 79448), (4376, 49655), (5470, 39724), (9931, 21880), (10940, 19862)]