215238785

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{167}}^1\times {\mathrm{257}}^1$

素因数の和:505

約数の個数: 32

約数和(自身を含む): 280869120

約数和(自身を除く): 65630335

約数列:

[1, 5, 17, 59, 85, 167, 257, 295, 835, 1003, 1285, 2839, 4369, 5015, 9853, 14195, 15163, 21845, 42919, 49265, 75815, 167501, 214595, 257771, 729623, 837505, 1288855, 2532221, 3648115, 12661105, 43047757, 215238785]

約数ペア:

[(1, 215238785), (5, 43047757), (17, 12661105), (59, 3648115), (85, 2532221), (167, 1288855), (257, 837505), (295, 729623), (835, 257771), (1003, 214595), (1285, 167501), (2839, 75815), (4369, 49265), (5015, 42919), (9853, 21845), (14195, 15163)]