221689209

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{383}}^1\times {\mathrm{641}}^1$

素因数の和:1077

約数の個数: 32

約数和(自身を含む): 347111424

約数和(自身を除く): 125422215

約数列:

[1, 3, 7, 21, 43, 129, 301, 383, 641, 903, 1149, 1923, 2681, 4487, 8043, 13461, 16469, 27563, 49407, 82689, 115283, 192941, 245503, 345849, 578823, 736509, 1718521, 5155563, 10556629, 31669887, 73896403, 221689209]

約数ペア:

[(1, 221689209), (3, 73896403), (7, 31669887), (21, 10556629), (43, 5155563), (129, 1718521), (301, 736509), (383, 578823), (641, 345849), (903, 245503), (1149, 192941), (1923, 115283), (2681, 82689), (4487, 49407), (8043, 27563), (13461, 16469)]