20171949505

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{1061}}^1\times {\mathrm{4759}}^1$

素因数の和:5889

約数の個数: 32

約数和(自身を含む): 26205742080

約数和(自身を除く): 6033792575

約数列:

[1, 5, 17, 47, 85, 235, 799, 1061, 3995, 4759, 5305, 18037, 23795, 49867, 80903, 90185, 223673, 249335, 404515, 847739, 1118365, 3802441, 4238695, 5049299, 19012205, 25246495, 85838083, 237317053, 429190415, 1186585265, 4034389901, 20171949505]

約数ペア:

[(1, 20171949505), (5, 4034389901), (17, 1186585265), (47, 429190415), (85, 237317053), (235, 85838083), (799, 25246495), (1061, 19012205), (3995, 5049299), (4759, 4238695), (5305, 3802441), (18037, 1118365), (23795, 847739), (49867, 404515), (80903, 249335), (90185, 223673)]