217210955

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{373}}^1$

素因数の和:456

約数の個数: 48

約数和(自身を含む): 308630784

約数和(自身を除く): 91419829

約数列:

[1, 5, 13, 17, 31, 65, 85, 155, 221, 289, 373, 403, 527, 1105, 1445, 1865, 2015, 2635, 3757, 4849, 6341, 6851, 8959, 11563, 18785, 24245, 31705, 34255, 44795, 57815, 82433, 107797, 116467, 150319, 196571, 412165, 538985, 582335, 751595, 982855, 1401361, 2555423, 3341707, 7006805, 12777115, 16708535, 43442191, 217210955]

約数ペア:

[(1, 217210955), (5, 43442191), (13, 16708535), (17, 12777115), (31, 7006805), (65, 3341707), (85, 2555423), (155, 1401361), (221, 982855), (289, 751595), (373, 582335), (403, 538985), (527, 412165), (1105, 196571), (1445, 150319), (1865, 116467), (2015, 107797), (2635, 82433), (3757, 57815), (4849, 44795), (6341, 34255), (6851, 31705), (8959, 24245), (11563, 18785)]